Home / 13,721.28-20,583.89-4,234.41

Finding the Fourth Proportional to 13,721.28, 20,583.89 and 4,234.41

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Solution

The fourth proportional to 13,721.28, 20,583.89 and 4,234.41 is: 6,352.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.28 : 20,583.89 = 4,234.41 : x
  2. Step 2: Convert to fraction form
    13,721.28/20,583.89 = 4,234.41/x
  3. Step 3: Cross multiply
    13,721.28x = 20,583.89 × 4,234.41
  4. Step 4: Simplify right side
    13,721.28x = 87,160,629.65
  5. Step 5: Solve for x
    x = 87,160,629.65/13,721.28
  6. Step 6: Final answer
    x = 6,352.22

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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.