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Finding the Third Proportional to 18,168 and 20,184

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Solution

The third proportional to 18,168 and 20,184 is: 22,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168 : 20,184 = 20,184 : x
  2. Step 2: Convert to fraction form
    18,168/20,184 = 20,184/x
  3. Step 3: Cross multiply
    18,168x = 20,184 × 20,184
  4. Step 4: Simplify right side
    18,168x = 407,393,856
  5. Step 5: Solve for x
    x = 407,393,856/18,168
  6. Step 6: Final answer
    x = 22,423.70

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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.