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Finding the Third Proportional to 5,109 and 11,939.25

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Solution

The third proportional to 5,109 and 11,939.25 is: 27,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,109 : 11,939.25 = 11,939.25 : x
  2. Step 2: Convert to fraction form
    5,109/11,939.25 = 11,939.25/x
  3. Step 3: Cross multiply
    5,109x = 11,939.25 × 11,939.25
  4. Step 4: Simplify right side
    5,109x = 142,545,690.56
  5. Step 5: Solve for x
    x = 142,545,690.56/5,109
  6. Step 6: Final answer
    x = 27,900.90

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.