Home / 18,691.28-25,792.98-11,617.55

Finding the Fourth Proportional to 18,691.28, 25,792.98 and 11,617.55

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Solution

The fourth proportional to 18,691.28, 25,792.98 and 11,617.55 is: 16,031.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.28 : 25,792.98 = 11,617.55 : x
  2. Step 2: Convert to fraction form
    18,691.28/25,792.98 = 11,617.55/x
  3. Step 3: Cross multiply
    18,691.28x = 25,792.98 × 11,617.55
  4. Step 4: Simplify right side
    18,691.28x = 299,651,105.83
  5. Step 5: Solve for x
    x = 299,651,105.83/18,691.28
  6. Step 6: Final answer
    x = 16,031.60

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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.