Home / 12,558.86-18,838.57-3,198.84

Finding the Fourth Proportional to 12,558.86, 18,838.57 and 3,198.84

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Solution

The fourth proportional to 12,558.86, 18,838.57 and 3,198.84 is: 4,798.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.86 : 18,838.57 = 3,198.84 : x
  2. Step 2: Convert to fraction form
    12,558.86/18,838.57 = 3,198.84/x
  3. Step 3: Cross multiply
    12,558.86x = 18,838.57 × 3,198.84
  4. Step 4: Simplify right side
    12,558.86x = 60,261,571.26
  5. Step 5: Solve for x
    x = 60,261,571.26/12,558.86
  6. Step 6: Final answer
    x = 4,798.33

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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.