Home / 12,170.05-18,240.80-5,498.79

Finding the Fourth Proportional to 12,170.05, 18,240.80 and 5,498.79

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Solution

The fourth proportional to 12,170.05, 18,240.80 and 5,498.79 is: 8,241.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.05 : 18,240.80 = 5,498.79 : x
  2. Step 2: Convert to fraction form
    12,170.05/18,240.80 = 5,498.79/x
  3. Step 3: Cross multiply
    12,170.05x = 18,240.80 × 5,498.79
  4. Step 4: Simplify right side
    12,170.05x = 100,302,232.74
  5. Step 5: Solve for x
    x = 100,302,232.74/12,170.05
  6. Step 6: Final answer
    x = 8,241.73

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Half scale
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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.