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Finding the Third Proportional to 11,889 and 26,139

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Solution

The third proportional to 11,889 and 26,139 is: 57,468.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,889 : 26,139 = 26,139 : x
  2. Step 2: Convert to fraction form
    11,889/26,139 = 26,139/x
  3. Step 3: Cross multiply
    11,889x = 26,139 × 26,139
  4. Step 4: Simplify right side
    11,889x = 683,247,321
  5. Step 5: Solve for x
    x = 683,247,321/11,889
  6. Step 6: Final answer
    x = 57,468.86

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.