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Finding the Fourth Proportional to 16,507,929.90, 24,761,894.85 and 12,728,793.90

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Solution

The fourth proportional to 16,507,929.90, 24,761,894.85 and 12,728,793.90 is: 19,093,190.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,507,929.90 : 24,761,894.85 = 12,728,793.90 : x
  2. Step 2: Convert to fraction form
    16,507,929.90/24,761,894.85 = 12,728,793.90/x
  3. Step 3: Cross multiply
    16,507,929.90x = 24,761,894.85 × 12,728,793.90
  4. Step 4: Simplify right side
    16,507,929.90x = 315,189,056,119,121.44
  5. Step 5: Solve for x
    x = 315,189,056,119,121.44/16,507,929.90
  6. Step 6: Final answer
    x = 19,093,190.85

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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.