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Finding the Fourth Proportional to 15,163.98, 22,745.85 and 3,919.29

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Solution

The fourth proportional to 15,163.98, 22,745.85 and 3,919.29 is: 5,878.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.98 : 22,745.85 = 3,919.29 : x
  2. Step 2: Convert to fraction form
    15,163.98/22,745.85 = 3,919.29/x
  3. Step 3: Cross multiply
    15,163.98x = 22,745.85 × 3,919.29
  4. Step 4: Simplify right side
    15,163.98x = 89,147,582.45
  5. Step 5: Solve for x
    x = 89,147,582.45/15,163.98
  6. Step 6: Final answer
    x = 5,878.90

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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.