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Finding the Fourth Proportional to 28,329.92, 42,494.88 and 13,493.88

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Solution

The fourth proportional to 28,329.92, 42,494.88 and 13,493.88 is: 20,240.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329.92 : 42,494.88 = 13,493.88 : x
  2. Step 2: Convert to fraction form
    28,329.92/42,494.88 = 13,493.88/x
  3. Step 3: Cross multiply
    28,329.92x = 42,494.88 × 13,493.88
  4. Step 4: Simplify right side
    28,329.92x = 573,420,811.33
  5. Step 5: Solve for x
    x = 573,420,811.33/28,329.92
  6. Step 6: Final answer
    x = 20,240.82

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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.