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Finding the Third Proportional to 18,400 and 23,280

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Solution

The third proportional to 18,400 and 23,280 is: 29,454.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,400 : 23,280 = 23,280 : x
  2. Step 2: Convert to fraction form
    18,400/23,280 = 23,280/x
  3. Step 3: Cross multiply
    18,400x = 23,280 × 23,280
  4. Step 4: Simplify right side
    18,400x = 541,958,400
  5. Step 5: Solve for x
    x = 541,958,400/18,400
  6. Step 6: Final answer
    x = 29,454.26

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.