Answer
$x=1$
Work Step by Step
To solve the proportion, we put the product of the means equal to the product of the extremes as follows:
$$\frac{x}{4}=\frac{5}{20}\Longrightarrow x\times 20= 5\times 4\Longrightarrow x=\frac{20}{20}=1 .$$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 7 - Review - Page 289: 7
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