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Finding the Third Proportional to 11,305 and 25,390

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Solution

The third proportional to 11,305 and 25,390 is: 57,023.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,305 : 25,390 = 25,390 : x
  2. Step 2: Convert to fraction form
    11,305/25,390 = 25,390/x
  3. Step 3: Cross multiply
    11,305x = 25,390 × 25,390
  4. Step 4: Simplify right side
    11,305x = 644,652,100
  5. Step 5: Solve for x
    x = 644,652,100/11,305
  6. Step 6: Final answer
    x = 57,023.63

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Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.