Home / 10,287.78-15,432.38-5,092.26

Finding the Fourth Proportional to 10,287.78, 15,432.38 and 5,092.26

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Solution

The fourth proportional to 10,287.78, 15,432.38 and 5,092.26 is: 7,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,287.78 : 15,432.38 = 5,092.26 : x
  2. Step 2: Convert to fraction form
    10,287.78/15,432.38 = 5,092.26/x
  3. Step 3: Cross multiply
    10,287.78x = 15,432.38 × 5,092.26
  4. Step 4: Simplify right side
    10,287.78x = 78,585,691.38
  5. Step 5: Solve for x
    x = 78,585,691.38/10,287.78
  6. Step 6: Final answer
    x = 7,638.74

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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.