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Finding the Third Proportional to 12,929 and 18,296

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Solution

The third proportional to 12,929 and 18,296 is: 25,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,929 : 18,296 = 18,296 : x
  2. Step 2: Convert to fraction form
    12,929/18,296 = 18,296/x
  3. Step 3: Cross multiply
    12,929x = 18,296 × 18,296
  4. Step 4: Simplify right side
    12,929x = 334,743,616
  5. Step 5: Solve for x
    x = 334,743,616/12,929
  6. Step 6: Final answer
    x = 25,890.91

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.