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Finding the Third Proportional to 18,806 and 28,154

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Solution

The third proportional to 18,806 and 28,154 is: 42,148.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806 : 28,154 = 28,154 : x
  2. Step 2: Convert to fraction form
    18,806/28,154 = 28,154/x
  3. Step 3: Cross multiply
    18,806x = 28,154 × 28,154
  4. Step 4: Simplify right side
    18,806x = 792,647,716
  5. Step 5: Solve for x
    x = 792,647,716/18,806
  6. Step 6: Final answer
    x = 42,148.66

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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.