Home / 13,843.82-20,768.47-5,078.81

Finding the Fourth Proportional to 13,843.82, 20,768.47 and 5,078.81

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Solution

The fourth proportional to 13,843.82, 20,768.47 and 5,078.81 is: 7,619.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.82 : 20,768.47 = 5,078.81 : x
  2. Step 2: Convert to fraction form
    13,843.82/20,768.47 = 5,078.81/x
  3. Step 3: Cross multiply
    13,843.82x = 20,768.47 × 5,078.81
  4. Step 4: Simplify right side
    13,843.82x = 105,479,113.12
  5. Step 5: Solve for x
    x = 105,479,113.12/13,843.82
  6. Step 6: Final answer
    x = 7,619.22

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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.