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Finding the Third Proportional to 11,178 and 20,771

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Solution

The third proportional to 11,178 and 20,771 is: 38,596.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178 : 20,771 = 20,771 : x
  2. Step 2: Convert to fraction form
    11,178/20,771 = 20,771/x
  3. Step 3: Cross multiply
    11,178x = 20,771 × 20,771
  4. Step 4: Simplify right side
    11,178x = 431,434,441
  5. Step 5: Solve for x
    x = 431,434,441/11,178
  6. Step 6: Final answer
    x = 38,596.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.