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Finding the Third Proportional to 8,709.75 and 13,102.88

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Solution

The third proportional to 8,709.75 and 13,102.88 is: 19,711.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.75 : 13,102.88 = 13,102.88 : x
  2. Step 2: Convert to fraction form
    8,709.75/13,102.88 = 13,102.88/x
  3. Step 3: Cross multiply
    8,709.75x = 13,102.88 × 13,102.88
  4. Step 4: Simplify right side
    8,709.75x = 171,685,333.27
  5. Step 5: Solve for x
    x = 171,685,333.27/8,709.75
  6. Step 6: Final answer
    x = 19,711.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.