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Finding the Fourth Proportional to 39,937.80, 59,906.70 and 12,232.20

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Solution

The fourth proportional to 39,937.80, 59,906.70 and 12,232.20 is: 18,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,937.80 : 59,906.70 = 12,232.20 : x
  2. Step 2: Convert to fraction form
    39,937.80/59,906.70 = 12,232.20/x
  3. Step 3: Cross multiply
    39,937.80x = 59,906.70 × 12,232.20
  4. Step 4: Simplify right side
    39,937.80x = 732,790,735.74
  5. Step 5: Solve for x
    x = 732,790,735.74/39,937.80
  6. Step 6: Final answer
    x = 18,348.30

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1.5x scale

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.