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Finding the Third Proportional to 8,910 and 13,971

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Solution

The third proportional to 8,910 and 13,971 is: 21,906.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910 : 13,971 = 13,971 : x
  2. Step 2: Convert to fraction form
    8,910/13,971 = 13,971/x
  3. Step 3: Cross multiply
    8,910x = 13,971 × 13,971
  4. Step 4: Simplify right side
    8,910x = 195,188,841
  5. Step 5: Solve for x
    x = 195,188,841/8,910
  6. Step 6: Final answer
    x = 21,906.72

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.