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Finding the Third Proportional to 18,563 and 39,715

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Solution

The third proportional to 18,563 and 39,715 is: 84,969.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,563 : 39,715 = 39,715 : x
  2. Step 2: Convert to fraction form
    18,563/39,715 = 39,715/x
  3. Step 3: Cross multiply
    18,563x = 39,715 × 39,715
  4. Step 4: Simplify right side
    18,563x = 1,577,281,225
  5. Step 5: Solve for x
    x = 1,577,281,225/18,563
  6. Step 6: Final answer
    x = 84,969.09

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.