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Finding the Third Proportional to 12,802 and 19,869

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Solution

The third proportional to 12,802 and 19,869 is: 30,837.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,802 : 19,869 = 19,869 : x
  2. Step 2: Convert to fraction form
    12,802/19,869 = 19,869/x
  3. Step 3: Cross multiply
    12,802x = 19,869 × 19,869
  4. Step 4: Simplify right side
    12,802x = 394,777,161
  5. Step 5: Solve for x
    x = 394,777,161/12,802
  6. Step 6: Final answer
    x = 30,837.15

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.