6 : 4 = n : 20
You asked:
Solve \(6 : 4=n : 20\) for the variable \(n\).
MathBot Answer:
$$\begin{aligned}n &= 30\end{aligned}$$
Express both ratios as fractions. \[\frac{6}{4} = \frac{n}{20}\]
Cross-multiply and solve for the unknown. $$\begin{aligned}\frac{6}{4} &= \frac{n}{20} \\ 120 &= 4 n \\ n &&= 30 \end{aligned}$$