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Finding the Fourth Proportional to 20,603,767.50, 30,904,888.50 and 8,313,046.20

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Solution

The fourth proportional to 20,603,767.50, 30,904,888.50 and 8,313,046.20 is: 12,469,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,603,767.50 : 30,904,888.50 = 8,313,046.20 : x
  2. Step 2: Convert to fraction form
    20,603,767.50/30,904,888.50 = 8,313,046.20/x
  3. Step 3: Cross multiply
    20,603,767.50x = 30,904,888.50 × 8,313,046.20
  4. Step 4: Simplify right side
    20,603,767.50x = 256,913,765,906,348.72
  5. Step 5: Solve for x
    x = 256,913,765,906,348.72/20,603,767.50
  6. Step 6: Final answer
    x = 12,469,261.55

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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.