Home / 15,132.59-20,882.16-8,418.17

Finding the Fourth Proportional to 15,132.59, 20,882.16 and 8,418.17

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Solution

The fourth proportional to 15,132.59, 20,882.16 and 8,418.17 is: 11,616.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,132.59 : 20,882.16 = 8,418.17 : x
  2. Step 2: Convert to fraction form
    15,132.59/20,882.16 = 8,418.17/x
  3. Step 3: Cross multiply
    15,132.59x = 20,882.16 × 8,418.17
  4. Step 4: Simplify right side
    15,132.59x = 175,789,468.44
  5. Step 5: Solve for x
    x = 175,789,468.44/15,132.59
  6. Step 6: Final answer
    x = 11,616.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.