Home / 10,912.81-16,372.41-3,517.11

Finding the Fourth Proportional to 10,912.81, 16,372.41 and 3,517.11

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Solution

The fourth proportional to 10,912.81, 16,372.41 and 3,517.11 is: 5,276.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.81 : 16,372.41 = 3,517.11 : x
  2. Step 2: Convert to fraction form
    10,912.81/16,372.41 = 3,517.11/x
  3. Step 3: Cross multiply
    10,912.81x = 16,372.41 × 3,517.11
  4. Step 4: Simplify right side
    10,912.81x = 57,583,566.94
  5. Step 5: Solve for x
    x = 57,583,566.94/10,912.81
  6. Step 6: Final answer
    x = 5,276.69

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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.