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Finding the Fourth Proportional to 40,513.98, 60,770.97 and 10,931.82

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Solution

The fourth proportional to 40,513.98, 60,770.97 and 10,931.82 is: 16,397.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.98 : 60,770.97 = 10,931.82 : x
  2. Step 2: Convert to fraction form
    40,513.98/60,770.97 = 10,931.82/x
  3. Step 3: Cross multiply
    40,513.98x = 60,770.97 × 10,931.82
  4. Step 4: Simplify right side
    40,513.98x = 664,337,001.41
  5. Step 5: Solve for x
    x = 664,337,001.41/40,513.98
  6. Step 6: Final answer
    x = 16,397.72

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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.