Home / 13,672.04-20,509.19-3,811.41

Finding the Fourth Proportional to 13,672.04, 20,509.19 and 3,811.41

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Solution

The fourth proportional to 13,672.04, 20,509.19 and 3,811.41 is: 5,717.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.04 : 20,509.19 = 3,811.41 : x
  2. Step 2: Convert to fraction form
    13,672.04/20,509.19 = 3,811.41/x
  3. Step 3: Cross multiply
    13,672.04x = 20,509.19 × 3,811.41
  4. Step 4: Simplify right side
    13,672.04x = 78,168,912.80
  5. Step 5: Solve for x
    x = 78,168,912.80/13,672.04
  6. Step 6: Final answer
    x = 5,717.43

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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.