Home / 13,608.37-20,408.66-5,286.60

Finding the Fourth Proportional to 13,608.37, 20,408.66 and 5,286.60

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Solution

The fourth proportional to 13,608.37, 20,408.66 and 5,286.60 is: 7,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.37 : 20,408.66 = 5,286.60 : x
  2. Step 2: Convert to fraction form
    13,608.37/20,408.66 = 5,286.60/x
  3. Step 3: Cross multiply
    13,608.37x = 20,408.66 × 5,286.60
  4. Step 4: Simplify right side
    13,608.37x = 107,892,415.35
  5. Step 5: Solve for x
    x = 107,892,415.35/13,608.37
  6. Step 6: Final answer
    x = 7,928.39

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1.5x scale

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.