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Finding the Fourth Proportional to 18,658.67, 27,965.32 and 8,786.39

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Solution

The fourth proportional to 18,658.67, 27,965.32 and 8,786.39 is: 13,168.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.67 : 27,965.32 = 8,786.39 : x
  2. Step 2: Convert to fraction form
    18,658.67/27,965.32 = 8,786.39/x
  3. Step 3: Cross multiply
    18,658.67x = 27,965.32 × 8,786.39
  4. Step 4: Simplify right side
    18,658.67x = 245,714,207.99
  5. Step 5: Solve for x
    x = 245,714,207.99/18,658.67
  6. Step 6: Final answer
    x = 13,168.90

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1.5x scale

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.