Home / 13,840.41-20,761.26-3,979.47

Finding the Fourth Proportional to 13,840.41, 20,761.26 and 3,979.47

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Solution

The fourth proportional to 13,840.41, 20,761.26 and 3,979.47 is: 5,969.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,840.41 : 20,761.26 = 3,979.47 : x
  2. Step 2: Convert to fraction form
    13,840.41/20,761.26 = 3,979.47/x
  3. Step 3: Cross multiply
    13,840.41x = 20,761.26 × 3,979.47
  4. Step 4: Simplify right side
    13,840.41x = 82,618,811.33
  5. Step 5: Solve for x
    x = 82,618,811.33/13,840.41
  6. Step 6: Final answer
    x = 5,969.39

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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.