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Finding the Third Proportional to 11,916 and 18,866

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Solution

The third proportional to 11,916 and 18,866 is: 29,869.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916 : 18,866 = 18,866 : x
  2. Step 2: Convert to fraction form
    11,916/18,866 = 18,866/x
  3. Step 3: Cross multiply
    11,916x = 18,866 × 18,866
  4. Step 4: Simplify right side
    11,916x = 355,925,956
  5. Step 5: Solve for x
    x = 355,925,956/11,916
  6. Step 6: Final answer
    x = 29,869.58

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.