Home / 12,764.20-19,146.29-3,999.11

Finding the Fourth Proportional to 12,764.20, 19,146.29 and 3,999.11

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Solution

The fourth proportional to 12,764.20, 19,146.29 and 3,999.11 is: 5,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,764.20 : 19,146.29 = 3,999.11 : x
  2. Step 2: Convert to fraction form
    12,764.20/19,146.29 = 3,999.11/x
  3. Step 3: Cross multiply
    12,764.20x = 19,146.29 × 3,999.11
  4. Step 4: Simplify right side
    12,764.20x = 76,568,119.80
  5. Step 5: Solve for x
    x = 76,568,119.80/12,764.20
  6. Step 6: Final answer
    x = 5,998.66

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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.