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Finding the Third Proportional to 15,811.50 and 22,245

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Solution

The third proportional to 15,811.50 and 22,245 is: 31,296.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,811.50 : 22,245 = 22,245 : x
  2. Step 2: Convert to fraction form
    15,811.50/22,245 = 22,245/x
  3. Step 3: Cross multiply
    15,811.50x = 22,245 × 22,245
  4. Step 4: Simplify right side
    15,811.50x = 494,840,025
  5. Step 5: Solve for x
    x = 494,840,025/15,811.50
  6. Step 6: Final answer
    x = 31,296.21

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.