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Finding the Third Proportional to 12,256 and 28,480

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Solution

The third proportional to 12,256 and 28,480 is: 66,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,256 : 28,480 = 28,480 : x
  2. Step 2: Convert to fraction form
    12,256/28,480 = 28,480/x
  3. Step 3: Cross multiply
    12,256x = 28,480 × 28,480
  4. Step 4: Simplify right side
    12,256x = 811,110,400
  5. Step 5: Solve for x
    x = 811,110,400/12,256
  6. Step 6: Final answer
    x = 66,180.68

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.