Home / 13,905.56-20,858.15-3,375.66

Finding the Fourth Proportional to 13,905.56, 20,858.15 and 3,375.66

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Solution

The fourth proportional to 13,905.56, 20,858.15 and 3,375.66 is: 5,063.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.56 : 20,858.15 = 3,375.66 : x
  2. Step 2: Convert to fraction form
    13,905.56/20,858.15 = 3,375.66/x
  3. Step 3: Cross multiply
    13,905.56x = 20,858.15 × 3,375.66
  4. Step 4: Simplify right side
    13,905.56x = 70,410,005.75
  5. Step 5: Solve for x
    x = 70,410,005.75/13,905.56
  6. Step 6: Final answer
    x = 5,063.44

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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.