Home / 13,558.11-20,321.55-5,234.46

Finding the Fourth Proportional to 13,558.11, 20,321.55 and 5,234.46

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Solution

The fourth proportional to 13,558.11, 20,321.55 and 5,234.46 is: 7,845.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.11 : 20,321.55 = 5,234.46 : x
  2. Step 2: Convert to fraction form
    13,558.11/20,321.55 = 5,234.46/x
  3. Step 3: Cross multiply
    13,558.11x = 20,321.55 × 5,234.46
  4. Step 4: Simplify right side
    13,558.11x = 106,372,340.61
  5. Step 5: Solve for x
    x = 106,372,340.61/13,558.11
  6. Step 6: Final answer
    x = 7,845.66

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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.