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Finding the Third Proportional to 8,321 and 11,077.50

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Solution

The third proportional to 8,321 and 11,077.50 is: 14,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321 : 11,077.50 = 11,077.50 : x
  2. Step 2: Convert to fraction form
    8,321/11,077.50 = 11,077.50/x
  3. Step 3: Cross multiply
    8,321x = 11,077.50 × 11,077.50
  4. Step 4: Simplify right side
    8,321x = 122,711,006.25
  5. Step 5: Solve for x
    x = 122,711,006.25/8,321
  6. Step 6: Final answer
    x = 14,747.15

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.