Home / 18,190.72-27,286.12-12,332.80

Finding the Fourth Proportional to 18,190.72, 27,286.12 and 12,332.80

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Solution

The fourth proportional to 18,190.72, 27,286.12 and 12,332.80 is: 18,499.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190.72 : 27,286.12 = 12,332.80 : x
  2. Step 2: Convert to fraction form
    18,190.72/27,286.12 = 12,332.80/x
  3. Step 3: Cross multiply
    18,190.72x = 27,286.12 × 12,332.80
  4. Step 4: Simplify right side
    18,190.72x = 336,514,260.74
  5. Step 5: Solve for x
    x = 336,514,260.74/18,190.72
  6. Step 6: Final answer
    x = 18,499.23

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Similar ratio
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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.