Home / 20,785,840.20-31,155,432.30-10,008,304.20

Finding the Fourth Proportional to 20,785,840.20, 31,155,432.30 and 10,008,304.20

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Solution

The fourth proportional to 20,785,840.20, 31,155,432.30 and 10,008,304.20 is: 15,001,223.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,840.20 : 31,155,432.30 = 10,008,304.20 : x
  2. Step 2: Convert to fraction form
    20,785,840.20/31,155,432.30 = 10,008,304.20/x
  3. Step 3: Cross multiply
    20,785,840.20x = 31,155,432.30 × 10,008,304.20
  4. Step 4: Simplify right side
    20,785,840.20x = 311,813,043,940,905.62
  5. Step 5: Solve for x
    x = 311,813,043,940,905.62/20,785,840.20
  6. Step 6: Final answer
    x = 15,001,223.96

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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.