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Finding the Fourth Proportional to 13,912,101.60, 20,858,432.40 and 8,229,400.80

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Solution

The fourth proportional to 13,912,101.60, 20,858,432.40 and 8,229,400.80 is: 12,338,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912,101.60 : 20,858,432.40 = 8,229,400.80 : x
  2. Step 2: Convert to fraction form
    13,912,101.60/20,858,432.40 = 8,229,400.80/x
  3. Step 3: Cross multiply
    13,912,101.60x = 20,858,432.40 × 8,229,400.80
  4. Step 4: Simplify right side
    13,912,101.60x = 171,652,400,279,305.91
  5. Step 5: Solve for x
    x = 171,652,400,279,305.91/13,912,101.60
  6. Step 6: Final answer
    x = 12,338,351.55

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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.