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Finding the Fourth Proportional to 18,944.52, 28,434.30 and 9,591.11

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Solution

The fourth proportional to 18,944.52, 28,434.30 and 9,591.11 is: 14,395.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.52 : 28,434.30 = 9,591.11 : x
  2. Step 2: Convert to fraction form
    18,944.52/28,434.30 = 9,591.11/x
  3. Step 3: Cross multiply
    18,944.52x = 28,434.30 × 9,591.11
  4. Step 4: Simplify right side
    18,944.52x = 272,716,356.90
  5. Step 5: Solve for x
    x = 272,716,356.90/18,944.52
  6. Step 6: Final answer
    x = 14,395.53

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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.