Home / 13,810.82-20,716.12-3,422.56

Finding the Fourth Proportional to 13,810.82, 20,716.12 and 3,422.56

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Solution

The fourth proportional to 13,810.82, 20,716.12 and 3,422.56 is: 5,133.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.82 : 20,716.12 = 3,422.56 : x
  2. Step 2: Convert to fraction form
    13,810.82/20,716.12 = 3,422.56/x
  3. Step 3: Cross multiply
    13,810.82x = 20,716.12 × 3,422.56
  4. Step 4: Simplify right side
    13,810.82x = 70,902,163.67
  5. Step 5: Solve for x
    x = 70,902,163.67/13,810.82
  6. Step 6: Final answer
    x = 5,133.81

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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.