Home / 20,705,187.20-31,057,489.20-9,345,617.60

Finding the Fourth Proportional to 20,705,187.20, 31,057,489.20 and 9,345,617.60

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Solution

The fourth proportional to 20,705,187.20, 31,057,489.20 and 9,345,617.60 is: 14,018,294.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,705,187.20 : 31,057,489.20 = 9,345,617.60 : x
  2. Step 2: Convert to fraction form
    20,705,187.20/31,057,489.20 = 9,345,617.60/x
  3. Step 3: Cross multiply
    20,705,187.20x = 31,057,489.20 × 9,345,617.60
  4. Step 4: Simplify right side
    20,705,187.20x = 290,251,417,679,329.88
  5. Step 5: Solve for x
    x = 290,251,417,679,329.88/20,705,187.20
  6. Step 6: Final answer
    x = 14,018,294.78

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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.