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Finding the Third Proportional to 14,778 and 21,711

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Solution

The third proportional to 14,778 and 21,711 is: 31,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778 : 21,711 = 21,711 : x
  2. Step 2: Convert to fraction form
    14,778/21,711 = 21,711/x
  3. Step 3: Cross multiply
    14,778x = 21,711 × 21,711
  4. Step 4: Simplify right side
    14,778x = 471,367,521
  5. Step 5: Solve for x
    x = 471,367,521/14,778
  6. Step 6: Final answer
    x = 31,896.57

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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.