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Finding the Fourth Proportional to 15,170.56, 20,934.08 and 8,882.88

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Solution

The fourth proportional to 15,170.56, 20,934.08 and 8,882.88 is: 12,257.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,170.56 : 20,934.08 = 8,882.88 : x
  2. Step 2: Convert to fraction form
    15,170.56/20,934.08 = 8,882.88/x
  3. Step 3: Cross multiply
    15,170.56x = 20,934.08 × 8,882.88
  4. Step 4: Simplify right side
    15,170.56x = 185,954,920.55
  5. Step 5: Solve for x
    x = 185,954,920.55/15,170.56
  6. Step 6: Final answer
    x = 12,257.62

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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.