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Finding the Third Proportional to 18,444 and 20,388

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Solution

The third proportional to 18,444 and 20,388 is: 22,536.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,444 : 20,388 = 20,388 : x
  2. Step 2: Convert to fraction form
    18,444/20,388 = 20,388/x
  3. Step 3: Cross multiply
    18,444x = 20,388 × 20,388
  4. Step 4: Simplify right side
    18,444x = 415,670,544
  5. Step 5: Solve for x
    x = 415,670,544/18,444
  6. Step 6: Final answer
    x = 22,536.90

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.