To determine the value of \( n \) that will make the ratios equivalent, we can cross-multiply the terms in the equation:
\[ 5 \cdot n = 30 \cdot 4 \]
This simplifies to:
\[ 5n = 120 \]
Now, divide both sides by 5 to solve for \( n \):
\[ n = \frac{120}{5} = 24 \]
Therefore, the value of \( n \) that makes the ratios equivalent is:
\[ \boxed{24} \]