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Finding the Third Proportional to 8,658.50 and 18,835

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Solution

The third proportional to 8,658.50 and 18,835 is: 40,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.50 : 18,835 = 18,835 : x
  2. Step 2: Convert to fraction form
    8,658.50/18,835 = 18,835/x
  3. Step 3: Cross multiply
    8,658.50x = 18,835 × 18,835
  4. Step 4: Simplify right side
    8,658.50x = 354,757,225
  5. Step 5: Solve for x
    x = 354,757,225/8,658.50
  6. Step 6: Final answer
    x = 40,972.13

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.