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Finding the Third Proportional to 15,696 and 17,976

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Solution

The third proportional to 15,696 and 17,976 is: 20,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696 : 17,976 = 17,976 : x
  2. Step 2: Convert to fraction form
    15,696/17,976 = 17,976/x
  3. Step 3: Cross multiply
    15,696x = 17,976 × 17,976
  4. Step 4: Simplify right side
    15,696x = 323,136,576
  5. Step 5: Solve for x
    x = 323,136,576/15,696
  6. Step 6: Final answer
    x = 20,587.19

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.