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Finding the Third Proportional to 12,968 and 16,860

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Solution

The third proportional to 12,968 and 16,860 is: 21,920.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,968 : 16,860 = 16,860 : x
  2. Step 2: Convert to fraction form
    12,968/16,860 = 16,860/x
  3. Step 3: Cross multiply
    12,968x = 16,860 × 16,860
  4. Step 4: Simplify right side
    12,968x = 284,259,600
  5. Step 5: Solve for x
    x = 284,259,600/12,968
  6. Step 6: Final answer
    x = 21,920.08

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.