Home / 20,451,900.20-30,677,850.30-12,799,149.80

Finding the Fourth Proportional to 20,451,900.20, 30,677,850.30 and 12,799,149.80

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Solution

The fourth proportional to 20,451,900.20, 30,677,850.30 and 12,799,149.80 is: 19,198,724.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451,900.20 : 30,677,850.30 = 12,799,149.80 : x
  2. Step 2: Convert to fraction form
    20,451,900.20/30,677,850.30 = 12,799,149.80/x
  3. Step 3: Cross multiply
    20,451,900.20x = 30,677,850.30 × 12,799,149.80
  4. Step 4: Simplify right side
    20,451,900.20x = 392,650,401,531,675
  5. Step 5: Solve for x
    x = 392,650,401,531,675/20,451,900.20
  6. Step 6: Final answer
    x = 19,198,724.70

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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.