Home / 12,160.70-18,240.39-3,727.20

Finding the Fourth Proportional to 12,160.70, 18,240.39 and 3,727.20

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Solution

The fourth proportional to 12,160.70, 18,240.39 and 3,727.20 is: 5,590.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,160.70 : 18,240.39 = 3,727.20 : x
  2. Step 2: Convert to fraction form
    12,160.70/18,240.39 = 3,727.20/x
  3. Step 3: Cross multiply
    12,160.70x = 18,240.39 × 3,727.20
  4. Step 4: Simplify right side
    12,160.70x = 67,985,490.41
  5. Step 5: Solve for x
    x = 67,985,490.41/12,160.70
  6. Step 6: Final answer
    x = 5,590.59

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Double scale
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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.