Home / 12,220,306.20-18,340,956.90-5,407,363.80

Finding the Fourth Proportional to 12,220,306.20, 18,340,956.90 and 5,407,363.80

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Solution

The fourth proportional to 12,220,306.20, 18,340,956.90 and 5,407,363.80 is: 8,115,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,220,306.20 : 18,340,956.90 = 5,407,363.80 : x
  2. Step 2: Convert to fraction form
    12,220,306.20/18,340,956.90 = 5,407,363.80/x
  3. Step 3: Cross multiply
    12,220,306.20x = 18,340,956.90 × 5,407,363.80
  4. Step 4: Simplify right side
    12,220,306.20x = 99,176,226,398,420.20
  5. Step 5: Solve for x
    x = 99,176,226,398,420.20/12,220,306.20
  6. Step 6: Final answer
    x = 8,115,690.78

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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.