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Finding the Third Proportional to 8,709 and 18,875

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Solution

The third proportional to 8,709 and 18,875 is: 40,907.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709 : 18,875 = 18,875 : x
  2. Step 2: Convert to fraction form
    8,709/18,875 = 18,875/x
  3. Step 3: Cross multiply
    8,709x = 18,875 × 18,875
  4. Step 4: Simplify right side
    8,709x = 356,265,625
  5. Step 5: Solve for x
    x = 356,265,625/8,709
  6. Step 6: Final answer
    x = 40,907.75

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.