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Finding the Third Proportional to 18,187 and 19,852

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Solution

The third proportional to 18,187 and 19,852 is: 21,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187 : 19,852 = 19,852 : x
  2. Step 2: Convert to fraction form
    18,187/19,852 = 19,852/x
  3. Step 3: Cross multiply
    18,187x = 19,852 × 19,852
  4. Step 4: Simplify right side
    18,187x = 394,101,904
  5. Step 5: Solve for x
    x = 394,101,904/18,187
  6. Step 6: Final answer
    x = 21,669.43

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.