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Finding the Third Proportional to 11,808 and 28,200

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Solution

The third proportional to 11,808 and 28,200 is: 67,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,808 : 28,200 = 28,200 : x
  2. Step 2: Convert to fraction form
    11,808/28,200 = 28,200/x
  3. Step 3: Cross multiply
    11,808x = 28,200 × 28,200
  4. Step 4: Simplify right side
    11,808x = 795,240,000
  5. Step 5: Solve for x
    x = 795,240,000/11,808
  6. Step 6: Final answer
    x = 67,347.56

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Why These Related Problems?

These problems maintain the same ratio (2.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.