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Finding the Fourth Proportional to 39,882.56, 59,824.08 and 12,180.56

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Solution

The fourth proportional to 39,882.56, 59,824.08 and 12,180.56 is: 18,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,882.56 : 59,824.08 = 12,180.56 : x
  2. Step 2: Convert to fraction form
    39,882.56/59,824.08 = 12,180.56/x
  3. Step 3: Cross multiply
    39,882.56x = 59,824.08 × 12,180.56
  4. Step 4: Simplify right side
    39,882.56x = 728,690,795.88
  5. Step 5: Solve for x
    x = 728,690,795.88/39,882.56
  6. Step 6: Final answer
    x = 18,270.91

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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.