Home / 10,116.11-15,147.57-8,131.20

Finding the Fourth Proportional to 10,116.11, 15,147.57 and 8,131.20

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Solution

The fourth proportional to 10,116.11, 15,147.57 and 8,131.20 is: 12,175.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,116.11 : 15,147.57 = 8,131.20 : x
  2. Step 2: Convert to fraction form
    10,116.11/15,147.57 = 8,131.20/x
  3. Step 3: Cross multiply
    10,116.11x = 15,147.57 × 8,131.20
  4. Step 4: Simplify right side
    10,116.11x = 123,167,921.18
  5. Step 5: Solve for x
    x = 123,167,921.18/10,116.11
  6. Step 6: Final answer
    x = 12,175.42

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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.