Home / 12,015.80-18,021.56-3,249.60

Finding the Fourth Proportional to 12,015.80, 18,021.56 and 3,249.60

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Solution

The fourth proportional to 12,015.80, 18,021.56 and 3,249.60 is: 4,873.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,015.80 : 18,021.56 = 3,249.60 : x
  2. Step 2: Convert to fraction form
    12,015.80/18,021.56 = 3,249.60/x
  3. Step 3: Cross multiply
    12,015.80x = 18,021.56 × 3,249.60
  4. Step 4: Simplify right side
    12,015.80x = 58,562,861.38
  5. Step 5: Solve for x
    x = 58,562,861.38/12,015.80
  6. Step 6: Final answer
    x = 4,873.82

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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.