Home / 10,115.62-15,172.25-2,720.66

Finding the Fourth Proportional to 10,115.62, 15,172.25 and 2,720.66

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Solution

The fourth proportional to 10,115.62, 15,172.25 and 2,720.66 is: 4,080.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.62 : 15,172.25 = 2,720.66 : x
  2. Step 2: Convert to fraction form
    10,115.62/15,172.25 = 2,720.66/x
  3. Step 3: Cross multiply
    10,115.62x = 15,172.25 × 2,720.66
  4. Step 4: Simplify right side
    10,115.62x = 41,278,444.22
  5. Step 5: Solve for x
    x = 41,278,444.22/10,115.62
  6. Step 6: Final answer
    x = 4,080.66

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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.