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Finding the Third Proportional to 21,396 and 49,191

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Solution

The third proportional to 21,396 and 49,191 is: 113,093.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396 : 49,191 = 49,191 : x
  2. Step 2: Convert to fraction form
    21,396/49,191 = 49,191/x
  3. Step 3: Cross multiply
    21,396x = 49,191 × 49,191
  4. Step 4: Simplify right side
    21,396x = 2,419,754,481
  5. Step 5: Solve for x
    x = 2,419,754,481/21,396
  6. Step 6: Final answer
    x = 113,093.78

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Why These Related Problems?

These problems maintain the same ratio (2.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.