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Finding the Fourth Proportional to 18,687.52, 28,023.14 and 5,357.57

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Solution

The fourth proportional to 18,687.52, 28,023.14 and 5,357.57 is: 8,034.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.52 : 28,023.14 = 5,357.57 : x
  2. Step 2: Convert to fraction form
    18,687.52/28,023.14 = 5,357.57/x
  3. Step 3: Cross multiply
    18,687.52x = 28,023.14 × 5,357.57
  4. Step 4: Simplify right side
    18,687.52x = 150,135,934.17
  5. Step 5: Solve for x
    x = 150,135,934.17/18,687.52
  6. Step 6: Final answer
    x = 8,034.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.