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Finding the Fourth Proportional to 18,876.32, 28,239.96 and 16,660.16

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Solution

The fourth proportional to 18,876.32, 28,239.96 and 16,660.16 is: 24,924.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.32 : 28,239.96 = 16,660.16 : x
  2. Step 2: Convert to fraction form
    18,876.32/28,239.96 = 16,660.16/x
  3. Step 3: Cross multiply
    18,876.32x = 28,239.96 × 16,660.16
  4. Step 4: Simplify right side
    18,876.32x = 470,482,251.99
  5. Step 5: Solve for x
    x = 470,482,251.99/18,876.32
  6. Step 6: Final answer
    x = 24,924.47

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