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Finding the Fourth Proportional to 15,167.29, 20,930.29 and 8,452.56

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Solution

The fourth proportional to 15,167.29, 20,930.29 and 8,452.56 is: 11,664.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,167.29 : 20,930.29 = 8,452.56 : x
  2. Step 2: Convert to fraction form
    15,167.29/20,930.29 = 8,452.56/x
  3. Step 3: Cross multiply
    15,167.29x = 20,930.29 × 8,452.56
  4. Step 4: Simplify right side
    15,167.29x = 176,914,532.04
  5. Step 5: Solve for x
    x = 176,914,532.04/15,167.29
  6. Step 6: Final answer
    x = 11,664.22

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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.