Explanation Given information: The provided proportion is: 12 18 = x 21 Formula used: According to the property of proportions: If a b = c d is a proportion, then, their cross products are equal, that is: a ⋅ d = c ⋅ b Where, a , b , c , d are real numbers and b ≠ 0 , d ≠ 0 . Calculation: Consider the provided proportion: 12 18 = x 21 Now, according to the property of proportions: If a b = c d is a proportion, then, their cross products are equal, that is: a ⋅ d = c ⋅ b Where, a , b , c , d are real numbers and b ≠ 0 , d ≠ 0

6th Edition

ISBN: 9780134179018

Author: Jamie Blair, John Tobey Jr., Jeffrey Slater, Jenny Crawford

Publisher: PEARSON

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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Chapter 4.6, Problem 29E

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To calculate: The value of $x$ in the proportion $1218=x21$ .

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Chapter 4.6, Problem 28E

Chapter 4.6, Problem 30E

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Chapter 4 Solutions

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Ch. 4.1 - Fill in the blanks. A number is divisible by...Ch. 4.1 - Fill in the blanks. A number is divisible by...Ch. 4.1 - Prob. 3E Ch. 4.1 - Prob. 4E Ch. 4.1 - Explain why you must divide by prime numbers when...Ch. 4.1 - Prob. 6E Ch. 4.1 - Prob. 7E Ch. 4.1 - Prob. 8E Ch. 4.1 - Is 232 divisible by 3? Why or why not?Ch. 4.1 - Prob. 10E

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The value of x in the proportion 12 18 = x 21 .

Solution Summary: The author explains how to calculate the value of x in the provided proportion.

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To calculate: The value of $x$ in the proportion $1218=x21$ .

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Chapter 4 Solutions

The value of x in the proportion 12 18 = x 21 .

Solution Summary: The author explains how to calculate the value of x in the provided proportion.

Concept explainers

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To calculate: The value of x<m:math><m:mi>x</m:mi></m:math> in the proportion 1218=x21<m:math><m:mrow><m:mfrac><m:mrow><m:mn>12</m:mn></m:mrow><m:mrow><m:mn>18</m:mn></m:mrow></m:mfrac><m:mo>=</m:mo><m:mfrac><m:mi>x</m:mi><m:mrow><m:mn>21</m:mn></m:mrow></m:mfrac></m:mrow></m:math>.

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Chapter 4 Solutions

To calculate: The value of $x$ in the proportion $1218=x21$ .