Home / 12,100.17-18,149.61-3,779.24

Finding the Fourth Proportional to 12,100.17, 18,149.61 and 3,779.24

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Solution

The fourth proportional to 12,100.17, 18,149.61 and 3,779.24 is: 5,668.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,100.17 : 18,149.61 = 3,779.24 : x
  2. Step 2: Convert to fraction form
    12,100.17/18,149.61 = 3,779.24/x
  3. Step 3: Cross multiply
    12,100.17x = 18,149.61 × 3,779.24
  4. Step 4: Simplify right side
    12,100.17x = 68,591,634.26
  5. Step 5: Solve for x
    x = 68,591,634.26/12,100.17
  6. Step 6: Final answer
    x = 5,668.65

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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.