Home / 10,115.16-15,172.28-3,542.82

Finding the Fourth Proportional to 10,115.16, 15,172.28 and 3,542.82

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Solution

The fourth proportional to 10,115.16, 15,172.28 and 3,542.82 is: 5,314.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.16 : 15,172.28 = 3,542.82 : x
  2. Step 2: Convert to fraction form
    10,115.16/15,172.28 = 3,542.82/x
  3. Step 3: Cross multiply
    10,115.16x = 15,172.28 × 3,542.82
  4. Step 4: Simplify right side
    10,115.16x = 53,752,657.03
  5. Step 5: Solve for x
    x = 53,752,657.03/10,115.16
  6. Step 6: Final answer
    x = 5,314.07

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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.