Home / 10,080.82-15,121.99-2,685.12

Finding the Fourth Proportional to 10,080.82, 15,121.99 and 2,685.12

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Solution

The fourth proportional to 10,080.82, 15,121.99 and 2,685.12 is: 4,027.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.82 : 15,121.99 = 2,685.12 : x
  2. Step 2: Convert to fraction form
    10,080.82/15,121.99 = 2,685.12/x
  3. Step 3: Cross multiply
    10,080.82x = 15,121.99 × 2,685.12
  4. Step 4: Simplify right side
    10,080.82x = 40,604,304.44
  5. Step 5: Solve for x
    x = 40,604,304.44/10,080.82
  6. Step 6: Final answer
    x = 4,027.88

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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.