Chapter 6.2, Problem 22E

To determine

To solve the proportion by using algebra.

Answer to Problem 22E

The solution of the given proportion is $d=13$ .

Explanation of Solution

Given information : the proportion is given as,

  $\frac{39}{54}=\frac{d}{18}$

Calculation : the given proportion can be calculated as,

  $\begin{array}{l}\frac{39}{54}=\frac{d}{18}\\ \frac{39}{54}\cdot 18=\frac{d}{18}\cdot 18\left[\text{multiply each side by 18}\right]\\ d=\frac{702}{54}\left[\text{simplify}\right]\\ d=13\left[\text{divide}\right]\end{array}$

Therefore,

The solution of the given proportion is $d=13$ .