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Finding the Third Proportional to 8,471.50 and 11,317.50

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Solution

The third proportional to 8,471.50 and 11,317.50 is: 15,119.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.50 : 11,317.50 = 11,317.50 : x
  2. Step 2: Convert to fraction form
    8,471.50/11,317.50 = 11,317.50/x
  3. Step 3: Cross multiply
    8,471.50x = 11,317.50 × 11,317.50
  4. Step 4: Simplify right side
    8,471.50x = 128,085,806.25
  5. Step 5: Solve for x
    x = 128,085,806.25/8,471.50
  6. Step 6: Final answer
    x = 15,119.61

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.