Home / 10,781.24-16,163.80-7,439.95

Finding the Fourth Proportional to 10,781.24, 16,163.80 and 7,439.95

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Solution

The fourth proportional to 10,781.24, 16,163.80 and 7,439.95 is: 11,154.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.24 : 16,163.80 = 7,439.95 : x
  2. Step 2: Convert to fraction form
    10,781.24/16,163.80 = 7,439.95/x
  3. Step 3: Cross multiply
    10,781.24x = 16,163.80 × 7,439.95
  4. Step 4: Simplify right side
    10,781.24x = 120,257,863.81
  5. Step 5: Solve for x
    x = 120,257,863.81/10,781.24
  6. Step 6: Final answer
    x = 11,154.36

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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.