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Finding the Fourth Proportional to 20,503.68, 30,755.82 and 6,463.44

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Solution

The fourth proportional to 20,503.68, 30,755.82 and 6,463.44 is: 9,695.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,503.68 : 30,755.82 = 6,463.44 : x
  2. Step 2: Convert to fraction form
    20,503.68/30,755.82 = 6,463.44/x
  3. Step 3: Cross multiply
    20,503.68x = 30,755.82 × 6,463.44
  4. Step 4: Simplify right side
    20,503.68x = 198,788,397.22
  5. Step 5: Solve for x
    x = 198,788,397.22/20,503.68
  6. Step 6: Final answer
    x = 9,695.25

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1.5x scale

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.