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Finding the Third Proportional to 8,021 and 11,945

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Solution

The third proportional to 8,021 and 11,945 is: 17,788.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,021 : 11,945 = 11,945 : x
  2. Step 2: Convert to fraction form
    8,021/11,945 = 11,945/x
  3. Step 3: Cross multiply
    8,021x = 11,945 × 11,945
  4. Step 4: Simplify right side
    8,021x = 142,683,025
  5. Step 5: Solve for x
    x = 142,683,025/8,021
  6. Step 6: Final answer
    x = 17,788.68

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.