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Finding the Third Proportional to 18,633 and 28,190

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Solution

The third proportional to 18,633 and 28,190 is: 42,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633 : 28,190 = 28,190 : x
  2. Step 2: Convert to fraction form
    18,633/28,190 = 28,190/x
  3. Step 3: Cross multiply
    18,633x = 28,190 × 28,190
  4. Step 4: Simplify right side
    18,633x = 794,676,100
  5. Step 5: Solve for x
    x = 794,676,100/18,633
  6. Step 6: Final answer
    x = 42,648.85

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.