Answer
$n \approx 13.3$
Work Step by Step
Before we can solve this proportion, let's rewrite it in a more conventional way as two equal ratios:
$\dfrac{8}{15} = \dfrac{n}{25}$
To solve a proportion, we use the cross products property, multiplying the numerator of one ratio with the denominator of the other ratio, and vice versa:
$25(8) = 15n$
Multiply on the left side of the equation:
$200 = 15n$
Divide each side of the equation by $15$ to solve for $n$:
$n \approx 13.3$