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Finding the Third Proportional to 18,486.38 and 27,720.56

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Solution

The third proportional to 18,486.38 and 27,720.56 is: 41,567.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,486.38 : 27,720.56 = 27,720.56 : x
  2. Step 2: Convert to fraction form
    18,486.38/27,720.56 = 27,720.56/x
  3. Step 3: Cross multiply
    18,486.38x = 27,720.56 × 27,720.56
  4. Step 4: Simplify right side
    18,486.38x = 768,429,585.32
  5. Step 5: Solve for x
    x = 768,429,585.32/18,486.38
  6. Step 6: Final answer
    x = 41,567.35

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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.