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Finding the Fourth Proportional to 28,553.92, 42,771.12 and 18,113.92

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Solution

The fourth proportional to 28,553.92, 42,771.12 and 18,113.92 is: 27,132.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.92 : 42,771.12 = 18,113.92 : x
  2. Step 2: Convert to fraction form
    28,553.92/42,771.12 = 18,113.92/x
  3. Step 3: Cross multiply
    28,553.92x = 42,771.12 × 18,113.92
  4. Step 4: Simplify right side
    28,553.92x = 774,752,645.99
  5. Step 5: Solve for x
    x = 774,752,645.99/28,553.92
  6. Step 6: Final answer
    x = 27,132.97

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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.