Home / 12,949.50-19,424.26-5,163.78

Finding the Fourth Proportional to 12,949.50, 19,424.26 and 5,163.78

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Solution

The fourth proportional to 12,949.50, 19,424.26 and 5,163.78 is: 7,745.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,949.50 : 19,424.26 = 5,163.78 : x
  2. Step 2: Convert to fraction form
    12,949.50/19,424.26 = 5,163.78/x
  3. Step 3: Cross multiply
    12,949.50x = 19,424.26 × 5,163.78
  4. Step 4: Simplify right side
    12,949.50x = 100,302,655.55
  5. Step 5: Solve for x
    x = 100,302,655.55/12,949.50
  6. Step 6: Final answer
    x = 7,745.68

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1.5x scale

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.