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Finding the Third Proportional to 13,519.50 and 19,869

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Solution

The third proportional to 13,519.50 and 19,869 is: 29,200.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,519.50 : 19,869 = 19,869 : x
  2. Step 2: Convert to fraction form
    13,519.50/19,869 = 19,869/x
  3. Step 3: Cross multiply
    13,519.50x = 19,869 × 19,869
  4. Step 4: Simplify right side
    13,519.50x = 394,777,161
  5. Step 5: Solve for x
    x = 394,777,161/13,519.50
  6. Step 6: Final answer
    x = 29,200.57

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.