Answer
$x=10$
Work Step by Step
We are given the proportion $\frac{8}{x}=\frac{24}{30}$. We can set the cross products equal to each other and solve for the unknown variable.
$8\times30=x\times24$
$240=24x$
Divide both sides by 24.
$x=10$
Basic College Mathematics (9th Edition)
by Lial, Margaret L.; Salzman, Stanley A.; Hestwood, Diana L.
Published by
Pearson
ISBN 10:
0321825535
ISBN 13:
978-0-32182-553-7
Chapter 5 - Ratio and Proportion - 5.4 Solving Problems - 5.4 Exercises - Page 356: 13
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