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Finding the Third Proportional to 17,178 and 18,834

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Solution

The third proportional to 17,178 and 18,834 is: 20,649.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,178 : 18,834 = 18,834 : x
  2. Step 2: Convert to fraction form
    17,178/18,834 = 18,834/x
  3. Step 3: Cross multiply
    17,178x = 18,834 × 18,834
  4. Step 4: Simplify right side
    17,178x = 354,719,556
  5. Step 5: Solve for x
    x = 354,719,556/17,178
  6. Step 6: Final answer
    x = 20,649.64

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These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.