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Finding the Third Proportional to 18,271 and 39,313

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Solution

The third proportional to 18,271 and 39,313 is: 84,588.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,271 : 39,313 = 39,313 : x
  2. Step 2: Convert to fraction form
    18,271/39,313 = 39,313/x
  3. Step 3: Cross multiply
    18,271x = 39,313 × 39,313
  4. Step 4: Simplify right side
    18,271x = 1,545,511,969
  5. Step 5: Solve for x
    x = 1,545,511,969/18,271
  6. Step 6: Final answer
    x = 84,588.25

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.