Home / 18,218.62-27,318.59-8,349.33

Finding the Fourth Proportional to 18,218.62, 27,318.59 and 8,349.33

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Solution

The fourth proportional to 18,218.62, 27,318.59 and 8,349.33 is: 12,519.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.62 : 27,318.59 = 8,349.33 : x
  2. Step 2: Convert to fraction form
    18,218.62/27,318.59 = 8,349.33/x
  3. Step 3: Cross multiply
    18,218.62x = 27,318.59 × 8,349.33
  4. Step 4: Simplify right side
    18,218.62x = 228,091,884.87
  5. Step 5: Solve for x
    x = 228,091,884.87/18,218.62
  6. Step 6: Final answer
    x = 12,519.71

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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.