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Finding the Third Proportional to 14,172 and 20,866

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Solution

The third proportional to 14,172 and 20,866 is: 30,721.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,172 : 20,866 = 20,866 : x
  2. Step 2: Convert to fraction form
    14,172/20,866 = 20,866/x
  3. Step 3: Cross multiply
    14,172x = 20,866 × 20,866
  4. Step 4: Simplify right side
    14,172x = 435,389,956
  5. Step 5: Solve for x
    x = 435,389,956/14,172
  6. Step 6: Final answer
    x = 30,721.84

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.