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Finding the Fourth Proportional to 28,399.68, 42,752.88 and 25,542

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Solution

The fourth proportional to 28,399.68, 42,752.88 and 25,542 is: 38,450.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,399.68 : 42,752.88 = 25,542 : x
  2. Step 2: Convert to fraction form
    28,399.68/42,752.88 = 25,542/x
  3. Step 3: Cross multiply
    28,399.68x = 42,752.88 × 25,542
  4. Step 4: Simplify right side
    28,399.68x = 1,091,994,060.96
  5. Step 5: Solve for x
    x = 1,091,994,060.96/28,399.68
  6. Step 6: Final answer
    x = 38,450.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.