Chapter 12, Problem 65CUR

To determine

To solve: The proportion $\frac{6}{21}=\frac{8}{z}$

Answer to Problem 65CUR

The value of $z$ in the proportion is $28$ .

Explanation of Solution

Given information : The proportion is $\frac{6}{21}=\frac{8}{z}$

Concept used : Cross-multiplication method.

Calculation :

  $\begin{array}{l}\frac{6}{21}=\frac{8}{z}\\ \Rightarrow 6\times z=8\times 21\\ \Rightarrow 6z=168\\ \Rightarrow z=\frac{168}{6}\\ \Rightarrow z=28\end{array}$

Thus, the value of $z$ in the proportion is $28$