Home / 20,785,538.20-31,154,979.30-10,008,002.20

Finding the Fourth Proportional to 20,785,538.20, 31,154,979.30 and 10,008,002.20

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Solution

The fourth proportional to 20,785,538.20, 31,154,979.30 and 10,008,002.20 is: 15,000,771.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,785,538.20 : 31,154,979.30 = 10,008,002.20 : x
  2. Step 2: Convert to fraction form
    20,785,538.20/31,154,979.30 = 10,008,002.20/x
  3. Step 3: Cross multiply
    20,785,538.20x = 31,154,979.30 × 10,008,002.20
  4. Step 4: Simplify right side
    20,785,538.20x = 311,799,101,375,354.44
  5. Step 5: Solve for x
    x = 311,799,101,375,354.44/20,785,538.20
  6. Step 6: Final answer
    x = 15,000,771.13

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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.