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Finding the Third Proportional to 8,426.25 and 18,509.25

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Solution

The third proportional to 8,426.25 and 18,509.25 is: 40,657.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,426.25 : 18,509.25 = 18,509.25 : x
  2. Step 2: Convert to fraction form
    8,426.25/18,509.25 = 18,509.25/x
  3. Step 3: Cross multiply
    8,426.25x = 18,509.25 × 18,509.25
  4. Step 4: Simplify right side
    8,426.25x = 342,592,335.56
  5. Step 5: Solve for x
    x = 342,592,335.56/8,426.25
  6. Step 6: Final answer
    x = 40,657.75

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.