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Finding the Fourth Proportional to 33,296.80, 49,939.44 and 12,520.48

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Solution

The fourth proportional to 33,296.80, 49,939.44 and 12,520.48 is: 18,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,296.80 : 49,939.44 = 12,520.48 : x
  2. Step 2: Convert to fraction form
    33,296.80/49,939.44 = 12,520.48/x
  3. Step 3: Cross multiply
    33,296.80x = 49,939.44 × 12,520.48
  4. Step 4: Simplify right side
    33,296.80x = 625,265,759.73
  5. Step 5: Solve for x
    x = 625,265,759.73/33,296.80
  6. Step 6: Final answer
    x = 18,778.55

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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.