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Finding the Fourth Proportional to 28,493.28, 42,738.68 and 8,773.84

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Solution

The fourth proportional to 28,493.28, 42,738.68 and 8,773.84 is: 13,160.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,493.28 : 42,738.68 = 8,773.84 : x
  2. Step 2: Convert to fraction form
    28,493.28/42,738.68 = 8,773.84/x
  3. Step 3: Cross multiply
    28,493.28x = 42,738.68 × 8,773.84
  4. Step 4: Simplify right side
    28,493.28x = 374,982,340.13
  5. Step 5: Solve for x
    x = 374,982,340.13/28,493.28
  6. Step 6: Final answer
    x = 13,160.38

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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.