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Finding the Third Proportional to 17,160 and 20,712

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Solution

The third proportional to 17,160 and 20,712 is: 24,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,160 : 20,712 = 20,712 : x
  2. Step 2: Convert to fraction form
    17,160/20,712 = 20,712/x
  3. Step 3: Cross multiply
    17,160x = 20,712 × 20,712
  4. Step 4: Simplify right side
    17,160x = 428,986,944
  5. Step 5: Solve for x
    x = 428,986,944/17,160
  6. Step 6: Final answer
    x = 24,999.24

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.