Home / 28,721.90-43,082.92-8,731.57

Finding the Fourth Proportional to 28,721.90, 43,082.92 and 8,731.57

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Solution

The fourth proportional to 28,721.90, 43,082.92 and 8,731.57 is: 13,097.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,721.90 : 43,082.92 = 8,731.57 : x
  2. Step 2: Convert to fraction form
    28,721.90/43,082.92 = 8,731.57/x
  3. Step 3: Cross multiply
    28,721.90x = 43,082.92 × 8,731.57
  4. Step 4: Simplify right side
    28,721.90x = 376,181,531.78
  5. Step 5: Solve for x
    x = 376,181,531.78/28,721.90
  6. Step 6: Final answer
    x = 13,097.38

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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.