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Finding the Fourth Proportional to 33,658.80, 50,432.64 and 20,471.28

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Solution

The fourth proportional to 33,658.80, 50,432.64 and 20,471.28 is: 30,673.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,658.80 : 50,432.64 = 20,471.28 : x
  2. Step 2: Convert to fraction form
    33,658.80/50,432.64 = 20,471.28/x
  3. Step 3: Cross multiply
    33,658.80x = 50,432.64 × 20,471.28
  4. Step 4: Simplify right side
    33,658.80x = 1,032,420,694.58
  5. Step 5: Solve for x
    x = 1,032,420,694.58/33,658.80
  6. Step 6: Final answer
    x = 30,673.13

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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.