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Finding the Third Proportional to 13,239 and 18,238.50

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Solution

The third proportional to 13,239 and 18,238.50 is: 25,125.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239 : 18,238.50 = 18,238.50 : x
  2. Step 2: Convert to fraction form
    13,239/18,238.50 = 18,238.50/x
  3. Step 3: Cross multiply
    13,239x = 18,238.50 × 18,238.50
  4. Step 4: Simplify right side
    13,239x = 332,642,882.25
  5. Step 5: Solve for x
    x = 332,642,882.25/13,239
  6. Step 6: Final answer
    x = 25,125.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.