Home / 13,147.24-19,716.60-4,379.80

Finding the Fourth Proportional to 13,147.24, 19,716.60 and 4,379.80

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Solution

The fourth proportional to 13,147.24, 19,716.60 and 4,379.80 is: 6,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.24 : 19,716.60 = 4,379.80 : x
  2. Step 2: Convert to fraction form
    13,147.24/19,716.60 = 4,379.80/x
  3. Step 3: Cross multiply
    13,147.24x = 19,716.60 × 4,379.80
  4. Step 4: Simplify right side
    13,147.24x = 86,354,764.68
  5. Step 5: Solve for x
    x = 86,354,764.68/13,147.24
  6. Step 6: Final answer
    x = 6,568.28

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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.