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Finding the Third Proportional to 13,447 and 20,147.50

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Solution

The third proportional to 13,447 and 20,147.50 is: 30,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447 : 20,147.50 = 20,147.50 : x
  2. Step 2: Convert to fraction form
    13,447/20,147.50 = 20,147.50/x
  3. Step 3: Cross multiply
    13,447x = 20,147.50 × 20,147.50
  4. Step 4: Simplify right side
    13,447x = 405,921,756.25
  5. Step 5: Solve for x
    x = 405,921,756.25/13,447
  6. Step 6: Final answer
    x = 30,186.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.