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Finding the Third Proportional to 18,980 and 29,326

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Solution

The third proportional to 18,980 and 29,326 is: 45,311.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980 : 29,326 = 29,326 : x
  2. Step 2: Convert to fraction form
    18,980/29,326 = 29,326/x
  3. Step 3: Cross multiply
    18,980x = 29,326 × 29,326
  4. Step 4: Simplify right side
    18,980x = 860,014,276
  5. Step 5: Solve for x
    x = 860,014,276/18,980
  6. Step 6: Final answer
    x = 45,311.61

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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.