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Finding the Fourth Proportional to 15,034.88, 20,748.06 and 8,659.14

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Solution

The fourth proportional to 15,034.88, 20,748.06 and 8,659.14 is: 11,949.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.88 : 20,748.06 = 8,659.14 : x
  2. Step 2: Convert to fraction form
    15,034.88/20,748.06 = 8,659.14/x
  3. Step 3: Cross multiply
    15,034.88x = 20,748.06 × 8,659.14
  4. Step 4: Simplify right side
    15,034.88x = 179,660,356.27
  5. Step 5: Solve for x
    x = 179,660,356.27/15,034.88
  6. Step 6: Final answer
    x = 11,949.57

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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.