Home / 13,821.43-20,734.20-4,458.37

Finding the Fourth Proportional to 13,821.43, 20,734.20 and 4,458.37

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Solution

The fourth proportional to 13,821.43, 20,734.20 and 4,458.37 is: 6,688.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.43 : 20,734.20 = 4,458.37 : x
  2. Step 2: Convert to fraction form
    13,821.43/20,734.20 = 4,458.37/x
  3. Step 3: Cross multiply
    13,821.43x = 20,734.20 × 4,458.37
  4. Step 4: Simplify right side
    13,821.43x = 92,440,735.25
  5. Step 5: Solve for x
    x = 92,440,735.25/13,821.43
  6. Step 6: Final answer
    x = 6,688.22

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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.