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Finding the Third Proportional to 8,380 and 18,040

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Solution

The third proportional to 8,380 and 18,040 is: 38,835.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380 : 18,040 = 18,040 : x
  2. Step 2: Convert to fraction form
    8,380/18,040 = 18,040/x
  3. Step 3: Cross multiply
    8,380x = 18,040 × 18,040
  4. Step 4: Simplify right side
    8,380x = 325,441,600
  5. Step 5: Solve for x
    x = 325,441,600/8,380
  6. Step 6: Final answer
    x = 38,835.51

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.