What value of [tex]$x$[/tex] makes this proportion true?

[tex]
\frac{25}{20}=\frac{x}{4}
[/tex]

A. 6
B. 9
C. 20
D. 5



Answer :

To solve the proportion [tex]\(\frac{25}{20} = \frac{x}{4}\)[/tex], we need to find the value of [tex]\(x\)[/tex] that makes both sides of the equation equal. Here’s a step-by-step solution:

1. Set up the proportion:
[tex]\[ \frac{25}{20} = \frac{x}{4} \][/tex]

2. Cross-multiply to get rid of the fractions:
[tex]\[ 25 \cdot 4 = 20 \cdot x \][/tex]
This gives us:
[tex]\[ 100 = 20x \][/tex]

3. Solve for [tex]\(x\)[/tex]:
To isolate [tex]\(x\)[/tex], divide both sides of the equation by 20:
[tex]\[ x = \frac{100}{20} \][/tex]
Simplifying this:
[tex]\[ x = 5 \][/tex]

So, the value of [tex]\(x\)[/tex] that makes the proportion true is [tex]\(\boxed{5}\)[/tex]. Therefore, the correct answer is D.