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Finding the Third Proportional to 8,511 and 13,285.50

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Solution

The third proportional to 8,511 and 13,285.50 is: 20,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,511 : 13,285.50 = 13,285.50 : x
  2. Step 2: Convert to fraction form
    8,511/13,285.50 = 13,285.50/x
  3. Step 3: Cross multiply
    8,511x = 13,285.50 × 13,285.50
  4. Step 4: Simplify right side
    8,511x = 176,504,510.25
  5. Step 5: Solve for x
    x = 176,504,510.25/8,511
  6. Step 6: Final answer
    x = 20,738.40

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.