Home / 28,091.78-42,089.71-15,452.12

Finding the Fourth Proportional to 28,091.78, 42,089.71 and 15,452.12

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Solution

The fourth proportional to 28,091.78, 42,089.71 and 15,452.12 is: 23,151.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.78 : 42,089.71 = 15,452.12 : x
  2. Step 2: Convert to fraction form
    28,091.78/42,089.71 = 15,452.12/x
  3. Step 3: Cross multiply
    28,091.78x = 42,089.71 × 15,452.12
  4. Step 4: Simplify right side
    28,091.78x = 650,375,000.61
  5. Step 5: Solve for x
    x = 650,375,000.61/28,091.78
  6. Step 6: Final answer
    x = 23,151.79

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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.