Home / 28,512.14-42,764.15-9,791.87

Finding the Fourth Proportional to 28,512.14, 42,764.15 and 9,791.87

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Solution

The fourth proportional to 28,512.14, 42,764.15 and 9,791.87 is: 14,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.14 : 42,764.15 = 9,791.87 : x
  2. Step 2: Convert to fraction form
    28,512.14/42,764.15 = 9,791.87/x
  3. Step 3: Cross multiply
    28,512.14x = 42,764.15 × 9,791.87
  4. Step 4: Simplify right side
    28,512.14x = 418,740,997.46
  5. Step 5: Solve for x
    x = 418,740,997.46/28,512.14
  6. Step 6: Final answer
    x = 14,686.41

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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.