Home / 20,790,900.18-31,188,489.24-7,847,952.90

Finding the Fourth Proportional to 20,790,900.18, 31,188,489.24 and 7,847,952.90

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Solution

The fourth proportional to 20,790,900.18, 31,188,489.24 and 7,847,952.90 is: 11,772,736.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790,900.18 : 31,188,489.24 = 7,847,952.90 : x
  2. Step 2: Convert to fraction form
    20,790,900.18/31,188,489.24 = 7,847,952.90/x
  3. Step 3: Cross multiply
    20,790,900.18x = 31,188,489.24 × 7,847,952.90
  4. Step 4: Simplify right side
    20,790,900.18x = 244,765,794,577,676.78
  5. Step 5: Solve for x
    x = 244,765,794,577,676.78/20,790,900.18
  6. Step 6: Final answer
    x = 11,772,736.75

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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.