Finding the Fourth Proportional to 20,688,519.44, 30,984,948.08 and 19,971,074.08
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Solution
The fourth proportional to 20,688,519.44, 30,984,948.08 and 19,971,074.08 is: 29,910,438.75
Step by Step Solution
- Step 1: Write the proportion equation
20,688,519.44 : 30,984,948.08 = 19,971,074.08 : x - Step 2: Convert to fraction form
20,688,519.44/30,984,948.08 = 19,971,074.08/x - Step 3: Cross multiply
20,688,519.44x = 30,984,948.08 × 19,971,074.08 - Step 4: Simplify right side
20,688,519.44x = 618,802,693,470,633.62 - Step 5: Solve for x
x = 618,802,693,470,633.62/20,688,519.44 - Step 6: Final answer
x = 29,910,438.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.