Home / 12,128,073.20-18,194,734.20-3,609,270.80

Finding the Fourth Proportional to 12,128,073.20, 18,194,734.20 and 3,609,270.80

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Solution

The fourth proportional to 12,128,073.20, 18,194,734.20 and 3,609,270.80 is: 5,414,687.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,073.20 : 18,194,734.20 = 3,609,270.80 : x
  2. Step 2: Convert to fraction form
    12,128,073.20/18,194,734.20 = 3,609,270.80/x
  3. Step 3: Cross multiply
    12,128,073.20x = 18,194,734.20 × 3,609,270.80
  4. Step 4: Simplify right side
    12,128,073.20x = 65,669,722,861,821.35
  5. Step 5: Solve for x
    x = 65,669,722,861,821.35/12,128,073.20
  6. Step 6: Final answer
    x = 5,414,687.21

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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.