Home / 10,912.80-16,358.40-5,361.60

Finding the Fourth Proportional to 10,912.80, 16,358.40 and 5,361.60

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Solution

The fourth proportional to 10,912.80, 16,358.40 and 5,361.60 is: 8,037.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,912.80 : 16,358.40 = 5,361.60 : x
  2. Step 2: Convert to fraction form
    10,912.80/16,358.40 = 5,361.60/x
  3. Step 3: Cross multiply
    10,912.80x = 16,358.40 × 5,361.60
  4. Step 4: Simplify right side
    10,912.80x = 87,707,197.44
  5. Step 5: Solve for x
    x = 87,707,197.44/10,912.80
  6. Step 6: Final answer
    x = 8,037.09

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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.