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Finding the Fourth Proportional to 38,511.60, 57,781.80 and 15,154.80

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Solution

The fourth proportional to 38,511.60, 57,781.80 and 15,154.80 is: 22,737.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,511.60 : 57,781.80 = 15,154.80 : x
  2. Step 2: Convert to fraction form
    38,511.60/57,781.80 = 15,154.80/x
  3. Step 3: Cross multiply
    38,511.60x = 57,781.80 × 15,154.80
  4. Step 4: Simplify right side
    38,511.60x = 875,671,622.64
  5. Step 5: Solve for x
    x = 875,671,622.64/38,511.60
  6. Step 6: Final answer
    x = 22,737.87

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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.