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Finding the Third Proportional to 11,986 and 18,762

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Solution

The third proportional to 11,986 and 18,762 is: 29,368.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986 : 18,762 = 18,762 : x
  2. Step 2: Convert to fraction form
    11,986/18,762 = 18,762/x
  3. Step 3: Cross multiply
    11,986x = 18,762 × 18,762
  4. Step 4: Simplify right side
    11,986x = 352,012,644
  5. Step 5: Solve for x
    x = 352,012,644/11,986
  6. Step 6: Final answer
    x = 29,368.65

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.