Home / 11,958.09-17,939.87-3,639.29

Finding the Fourth Proportional to 11,958.09, 17,939.87 and 3,639.29

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Solution

The fourth proportional to 11,958.09, 17,939.87 and 3,639.29 is: 5,459.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.09 : 17,939.87 = 3,639.29 : x
  2. Step 2: Convert to fraction form
    11,958.09/17,939.87 = 3,639.29/x
  3. Step 3: Cross multiply
    11,958.09x = 17,939.87 × 3,639.29
  4. Step 4: Simplify right side
    11,958.09x = 65,288,281.60
  5. Step 5: Solve for x
    x = 65,288,281.60/11,958.09
  6. Step 6: Final answer
    x = 5,459.76

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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.