Home / 13,583.10-20,375.96-4,220.61

Finding the Fourth Proportional to 13,583.10, 20,375.96 and 4,220.61

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Solution

The fourth proportional to 13,583.10, 20,375.96 and 4,220.61 is: 6,331.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,583.10 : 20,375.96 = 4,220.61 : x
  2. Step 2: Convert to fraction form
    13,583.10/20,375.96 = 4,220.61/x
  3. Step 3: Cross multiply
    13,583.10x = 20,375.96 × 4,220.61
  4. Step 4: Simplify right side
    13,583.10x = 85,998,940.33
  5. Step 5: Solve for x
    x = 85,998,940.33/13,583.10
  6. Step 6: Final answer
    x = 6,331.32

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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.