Home / 20,451,910.20-30,677,865.30-12,799,159.80

Finding the Fourth Proportional to 20,451,910.20, 30,677,865.30 and 12,799,159.80

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Solution

The fourth proportional to 20,451,910.20, 30,677,865.30 and 12,799,159.80 is: 19,198,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451,910.20 : 30,677,865.30 = 12,799,159.80 : x
  2. Step 2: Convert to fraction form
    20,451,910.20/30,677,865.30 = 12,799,159.80/x
  3. Step 3: Cross multiply
    20,451,910.20x = 30,677,865.30 × 12,799,159.80
  4. Step 4: Simplify right side
    20,451,910.20x = 392,650,900,297,575
  5. Step 5: Solve for x
    x = 392,650,900,297,575/20,451,910.20
  6. Step 6: Final answer
    x = 19,198,739.70

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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.