Home / 12,183.66-18,272.79-3,419.46

Finding the Fourth Proportional to 12,183.66, 18,272.79 and 3,419.46

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Solution

The fourth proportional to 12,183.66, 18,272.79 and 3,419.46 is: 5,128.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.66 : 18,272.79 = 3,419.46 : x
  2. Step 2: Convert to fraction form
    12,183.66/18,272.79 = 3,419.46/x
  3. Step 3: Cross multiply
    12,183.66x = 18,272.79 × 3,419.46
  4. Step 4: Simplify right side
    12,183.66x = 62,483,074.49
  5. Step 5: Solve for x
    x = 62,483,074.49/12,183.66
  6. Step 6: Final answer
    x = 5,128.43

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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.