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Finding the Third Proportional to 19,815 and 27,171

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Solution

The third proportional to 19,815 and 27,171 is: 37,257.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,815 : 27,171 = 27,171 : x
  2. Step 2: Convert to fraction form
    19,815/27,171 = 27,171/x
  3. Step 3: Cross multiply
    19,815x = 27,171 × 27,171
  4. Step 4: Simplify right side
    19,815x = 738,263,241
  5. Step 5: Solve for x
    x = 738,263,241/19,815
  6. Step 6: Final answer
    x = 37,257.80

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.