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Finding the Third Proportional to 9,178 and 13,811

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Solution

The third proportional to 9,178 and 13,811 is: 20,782.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,178 : 13,811 = 13,811 : x
  2. Step 2: Convert to fraction form
    9,178/13,811 = 13,811/x
  3. Step 3: Cross multiply
    9,178x = 13,811 × 13,811
  4. Step 4: Simplify right side
    9,178x = 190,743,721
  5. Step 5: Solve for x
    x = 190,743,721/9,178
  6. Step 6: Final answer
    x = 20,782.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.