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Finding the Fourth Proportional to 42,375.75, 63,564.09 and 12,793.86

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Solution

The fourth proportional to 42,375.75, 63,564.09 and 12,793.86 is: 19,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,375.75 : 63,564.09 = 12,793.86 : x
  2. Step 2: Convert to fraction form
    42,375.75/63,564.09 = 12,793.86/x
  3. Step 3: Cross multiply
    42,375.75x = 63,564.09 × 12,793.86
  4. Step 4: Simplify right side
    42,375.75x = 813,230,068.49
  5. Step 5: Solve for x
    x = 813,230,068.49/42,375.75
  6. Step 6: Final answer
    x = 19,190.93

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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.