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Finding the Third Proportional to 12,190.50 and 15,754.50

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Solution

The third proportional to 12,190.50 and 15,754.50 is: 20,360.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.50 : 15,754.50 = 15,754.50 : x
  2. Step 2: Convert to fraction form
    12,190.50/15,754.50 = 15,754.50/x
  3. Step 3: Cross multiply
    12,190.50x = 15,754.50 × 15,754.50
  4. Step 4: Simplify right side
    12,190.50x = 248,204,270.25
  5. Step 5: Solve for x
    x = 248,204,270.25/12,190.50
  6. Step 6: Final answer
    x = 20,360.47

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Why These Related Problems?

These problems maintain the same ratio (1.29) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.