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Finding the Third Proportional to 18,220 and 26,605

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Solution

The third proportional to 18,220 and 26,605 is: 38,848.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220 : 26,605 = 26,605 : x
  2. Step 2: Convert to fraction form
    18,220/26,605 = 26,605/x
  3. Step 3: Cross multiply
    18,220x = 26,605 × 26,605
  4. Step 4: Simplify right side
    18,220x = 707,826,025
  5. Step 5: Solve for x
    x = 707,826,025/18,220
  6. Step 6: Final answer
    x = 38,848.85

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.