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Finding the Third Proportional to 14,891 and 20,278

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Solution

The third proportional to 14,891 and 20,278 is: 27,613.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,891 : 20,278 = 20,278 : x
  2. Step 2: Convert to fraction form
    14,891/20,278 = 20,278/x
  3. Step 3: Cross multiply
    14,891x = 20,278 × 20,278
  4. Step 4: Simplify right side
    14,891x = 411,197,284
  5. Step 5: Solve for x
    x = 411,197,284/14,891
  6. Step 6: Final answer
    x = 27,613.81

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.