Home / 20,785,540.70-31,154,983.05-10,008,004.70

Finding the Fourth Proportional to 20,785,540.70, 31,154,983.05 and 10,008,004.70

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Solution

The fourth proportional to 20,785,540.70, 31,154,983.05 and 10,008,004.70 is: 15,000,774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,540.70 : 31,154,983.05 = 10,008,004.70 : x
  2. Step 2: Convert to fraction form
    20,785,540.70/31,154,983.05 = 10,008,004.70/x
  3. Step 3: Cross multiply
    20,785,540.70x = 31,154,983.05 × 10,008,004.70
  4. Step 4: Simplify right side
    20,785,540.70x = 311,799,216,792,820.31
  5. Step 5: Solve for x
    x = 311,799,216,792,820.31/20,785,540.70
  6. Step 6: Final answer
    x = 15,000,774.88

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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.