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Finding the Third Proportional to 17,707.50 and 27,639

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Solution

The third proportional to 17,707.50 and 27,639 is: 43,140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,707.50 : 27,639 = 27,639 : x
  2. Step 2: Convert to fraction form
    17,707.50/27,639 = 27,639/x
  3. Step 3: Cross multiply
    17,707.50x = 27,639 × 27,639
  4. Step 4: Simplify right side
    17,707.50x = 763,914,321
  5. Step 5: Solve for x
    x = 763,914,321/17,707.50
  6. Step 6: Final answer
    x = 43,140.72

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.