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Finding the Fourth Proportional to 18,832.28, 28,218.42 and 9,947.27

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Solution

The fourth proportional to 18,832.28, 28,218.42 and 9,947.27 is: 14,905.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.28 : 28,218.42 = 9,947.27 : x
  2. Step 2: Convert to fraction form
    18,832.28/28,218.42 = 9,947.27/x
  3. Step 3: Cross multiply
    18,832.28x = 28,218.42 × 9,947.27
  4. Step 4: Simplify right side
    18,832.28x = 280,696,101.62
  5. Step 5: Solve for x
    x = 280,696,101.62/18,832.28
  6. Step 6: Final answer
    x = 14,905.06

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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.