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Finding the Third Proportional to 11,255 and 15,603

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Solution

The third proportional to 11,255 and 15,603 is: 21,630.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,255 : 15,603 = 15,603 : x
  2. Step 2: Convert to fraction form
    11,255/15,603 = 15,603/x
  3. Step 3: Cross multiply
    11,255x = 15,603 × 15,603
  4. Step 4: Simplify right side
    11,255x = 243,453,609
  5. Step 5: Solve for x
    x = 243,453,609/11,255
  6. Step 6: Final answer
    x = 21,630.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.