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Finding the Third Proportional to 17,312 and 27,121

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Solution

The third proportional to 17,312 and 27,121 is: 42,487.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,312 : 27,121 = 27,121 : x
  2. Step 2: Convert to fraction form
    17,312/27,121 = 27,121/x
  3. Step 3: Cross multiply
    17,312x = 27,121 × 27,121
  4. Step 4: Simplify right side
    17,312x = 735,548,641
  5. Step 5: Solve for x
    x = 735,548,641/17,312
  6. Step 6: Final answer
    x = 42,487.79

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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.