Home / 20,785,845.20-31,155,439.80-10,008,309.20

Finding the Fourth Proportional to 20,785,845.20, 31,155,439.80 and 10,008,309.20

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Solution

The fourth proportional to 20,785,845.20, 31,155,439.80 and 10,008,309.20 is: 15,001,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,845.20 : 31,155,439.80 = 10,008,309.20 : x
  2. Step 2: Convert to fraction form
    20,785,845.20/31,155,439.80 = 10,008,309.20/x
  3. Step 3: Cross multiply
    20,785,845.20x = 31,155,439.80 × 10,008,309.20
  4. Step 4: Simplify right side
    20,785,845.20x = 311,813,274,780,386.12
  5. Step 5: Solve for x
    x = 311,813,274,780,386.12/20,785,845.20
  6. Step 6: Final answer
    x = 15,001,231.45

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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.