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Finding the Third Proportional to 18,686 and 27,867

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Solution

The third proportional to 18,686 and 27,867 is: 41,558.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686 : 27,867 = 27,867 : x
  2. Step 2: Convert to fraction form
    18,686/27,867 = 27,867/x
  3. Step 3: Cross multiply
    18,686x = 27,867 × 27,867
  4. Step 4: Simplify right side
    18,686x = 776,569,689
  5. Step 5: Solve for x
    x = 776,569,689/18,686
  6. Step 6: Final answer
    x = 41,558.90

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.