Home / 12,148.45-18,221.46-3,383.44

Finding the Fourth Proportional to 12,148.45, 18,221.46 and 3,383.44

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Solution

The fourth proportional to 12,148.45, 18,221.46 and 3,383.44 is: 5,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.45 : 18,221.46 = 3,383.44 : x
  2. Step 2: Convert to fraction form
    12,148.45/18,221.46 = 3,383.44/x
  3. Step 3: Cross multiply
    12,148.45x = 18,221.46 × 3,383.44
  4. Step 4: Simplify right side
    12,148.45x = 61,651,216.62
  5. Step 5: Solve for x
    x = 61,651,216.62/12,148.45
  6. Step 6: Final answer
    x = 5,074.82

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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.