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Finding the Third Proportional to 12,996 and 15,684

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Solution

The third proportional to 12,996 and 15,684 is: 18,927.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996 : 15,684 = 15,684 : x
  2. Step 2: Convert to fraction form
    12,996/15,684 = 15,684/x
  3. Step 3: Cross multiply
    12,996x = 15,684 × 15,684
  4. Step 4: Simplify right side
    12,996x = 245,987,856
  5. Step 5: Solve for x
    x = 245,987,856/12,996
  6. Step 6: Final answer
    x = 18,927.97

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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.