Home / 20,704,865.60-31,057,298.40-13,052,115.20

Finding the Fourth Proportional to 20,704,865.60, 31,057,298.40 and 13,052,115.20

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Solution

The fourth proportional to 20,704,865.60, 31,057,298.40 and 13,052,115.20 is: 19,578,172.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704,865.60 : 31,057,298.40 = 13,052,115.20 : x
  2. Step 2: Convert to fraction form
    20,704,865.60/31,057,298.40 = 13,052,115.20/x
  3. Step 3: Cross multiply
    20,704,865.60x = 31,057,298.40 × 13,052,115.20
  4. Step 4: Simplify right side
    20,704,865.60x = 405,363,436,517,575.62
  5. Step 5: Solve for x
    x = 405,363,436,517,575.62/20,704,865.60
  6. Step 6: Final answer
    x = 19,578,172.80

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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.