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Finding the Fourth Proportional to 13,163.20, 19,750.20 and 4,847.20

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Solution

The fourth proportional to 13,163.20, 19,750.20 and 4,847.20 is: 7,272.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.20 : 19,750.20 = 4,847.20 : x
  2. Step 2: Convert to fraction form
    13,163.20/19,750.20 = 4,847.20/x
  3. Step 3: Cross multiply
    13,163.20x = 19,750.20 × 4,847.20
  4. Step 4: Simplify right side
    13,163.20x = 95,733,169.44
  5. Step 5: Solve for x
    x = 95,733,169.44/13,163.20
  6. Step 6: Final answer
    x = 7,272.79

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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.