Home / 20,954.55-31,431.83-6,163.47

Finding the Fourth Proportional to 20,954.55, 31,431.83 and 6,163.47

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Solution

The fourth proportional to 20,954.55, 31,431.83 and 6,163.47 is: 9,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.55 : 31,431.83 = 6,163.47 : x
  2. Step 2: Convert to fraction form
    20,954.55/31,431.83 = 6,163.47/x
  3. Step 3: Cross multiply
    20,954.55x = 31,431.83 × 6,163.47
  4. Step 4: Simplify right side
    20,954.55x = 193,729,145.10
  5. Step 5: Solve for x
    x = 193,729,145.10/20,954.55
  6. Step 6: Final answer
    x = 9,245.21

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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.