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Finding the Third Proportional to 11,239 and 17,891

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Solution

The third proportional to 11,239 and 17,891 is: 28,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,239 : 17,891 = 17,891 : x
  2. Step 2: Convert to fraction form
    11,239/17,891 = 17,891/x
  3. Step 3: Cross multiply
    11,239x = 17,891 × 17,891
  4. Step 4: Simplify right side
    11,239x = 320,087,881
  5. Step 5: Solve for x
    x = 320,087,881/11,239
  6. Step 6: Final answer
    x = 28,480.10

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.