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Finding the Third Proportional to 18,820 and 27,667

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Solution

The third proportional to 18,820 and 27,667 is: 40,672.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820 : 27,667 = 27,667 : x
  2. Step 2: Convert to fraction form
    18,820/27,667 = 27,667/x
  3. Step 3: Cross multiply
    18,820x = 27,667 × 27,667
  4. Step 4: Simplify right side
    18,820x = 765,462,889
  5. Step 5: Solve for x
    x = 765,462,889/18,820
  6. Step 6: Final answer
    x = 40,672.84

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.