We need to find the missing numbers to make the three fractions equivalent: $\frac{1}{5} = \frac{3}{\Box} = \frac{\Box}{20}$.

1. Problem Description

We need to find the missing numbers to make the three fractions equivalent: $\frac{1}{5} = \frac{3}{\Box} = \frac{\Box}{20}$.

2. Solution Steps

First, let's find the missing denominator in the fraction $\frac{3}{\Box}$. We know that $\frac{1}{5} = \frac{3}{\Box}$. To get from 1 to 3 in the numerator, we multiply by

3. So, we need to multiply the denominator 5 by 3 as well:

$5 \times 3 = 15$

Therefore, $\frac{1}{5} = \frac{3}{15}$.

Next, we need to find the missing numerator in the fraction $\frac{\Box}{20}$. We know that $\frac{1}{5} = \frac{\Box}{20}$. To get from 5 to 20 in the denominator, we multiply by

4. So, we need to multiply the numerator 1 by 4 as well:

$1 \times 4 = 4$

Therefore, $\frac{1}{5} = \frac{4}{20}$.

So, we have $\frac{1}{5} = \frac{3}{15} = \frac{4}{20}$.

3. Final Answer

The missing numbers are 15 and

4. $\frac{1}{5} = \frac{3}{15} = \frac{4}{20}$.