Question

solve for z in the proportion.\\(\frac{z}{5} = \frac{84}{20}\\)\\(z = \square\\)

Explanation:

Step1: Cross-multiply to isolate z

$z \times 20 = 84 \times 5$

Step2: Calculate right-hand side

$20z = 420$

Step3: Divide by 20 to solve z

$z = \frac{420}{20} = 21$

Answer:

21