Home / 12,928.64-19,395.99-4,163.22

Finding the Fourth Proportional to 12,928.64, 19,395.99 and 4,163.22

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Solution

The fourth proportional to 12,928.64, 19,395.99 and 4,163.22 is: 6,245.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,928.64 : 19,395.99 = 4,163.22 : x
  2. Step 2: Convert to fraction form
    12,928.64/19,395.99 = 4,163.22/x
  3. Step 3: Cross multiply
    12,928.64x = 19,395.99 × 4,163.22
  4. Step 4: Simplify right side
    12,928.64x = 80,749,773.49
  5. Step 5: Solve for x
    x = 80,749,773.49/12,928.64
  6. Step 6: Final answer
    x = 6,245.81

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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.