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Finding the Third Proportional to 18,116 and 19,588

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Solution

The third proportional to 18,116 and 19,588 is: 21,179.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,116 : 19,588 = 19,588 : x
  2. Step 2: Convert to fraction form
    18,116/19,588 = 19,588/x
  3. Step 3: Cross multiply
    18,116x = 19,588 × 19,588
  4. Step 4: Simplify right side
    18,116x = 383,689,744
  5. Step 5: Solve for x
    x = 383,689,744/18,116
  6. Step 6: Final answer
    x = 21,179.61

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Why These Related Problems?

These problems maintain the same ratio (1.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.