Home / 13,828.81-20,740.42-3,965.44

Finding the Fourth Proportional to 13,828.81, 20,740.42 and 3,965.44

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Solution

The fourth proportional to 13,828.81, 20,740.42 and 3,965.44 is: 5,947.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,828.81 : 20,740.42 = 3,965.44 : x
  2. Step 2: Convert to fraction form
    13,828.81/20,740.42 = 3,965.44/x
  3. Step 3: Cross multiply
    13,828.81x = 20,740.42 × 3,965.44
  4. Step 4: Simplify right side
    13,828.81x = 82,244,891.08
  5. Step 5: Solve for x
    x = 82,244,891.08/13,828.81
  6. Step 6: Final answer
    x = 5,947.36

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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.