Home / 29,018.76-43,531.28-12,380.55

Finding the Fourth Proportional to 29,018.76, 43,531.28 and 12,380.55

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Solution

The fourth proportional to 29,018.76, 43,531.28 and 12,380.55 is: 18,572.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,018.76 : 43,531.28 = 12,380.55 : x
  2. Step 2: Convert to fraction form
    29,018.76/43,531.28 = 12,380.55/x
  3. Step 3: Cross multiply
    29,018.76x = 43,531.28 × 12,380.55
  4. Step 4: Simplify right side
    29,018.76x = 538,941,126.70
  5. Step 5: Solve for x
    x = 538,941,126.70/29,018.76
  6. Step 6: Final answer
    x = 18,572.16

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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.