Home / 13,905.58-20,858.19-3,375.69

Finding the Fourth Proportional to 13,905.58, 20,858.19 and 3,375.69

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Solution

The fourth proportional to 13,905.58, 20,858.19 and 3,375.69 is: 5,063.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.58 : 20,858.19 = 3,375.69 : x
  2. Step 2: Convert to fraction form
    13,905.58/20,858.19 = 3,375.69/x
  3. Step 3: Cross multiply
    13,905.58x = 20,858.19 × 3,375.69
  4. Step 4: Simplify right side
    13,905.58x = 70,410,783.40
  5. Step 5: Solve for x
    x = 70,410,783.40/13,905.58
  6. Step 6: Final answer
    x = 5,063.49

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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.