Home / 12,179.87-18,268.60-8,256.33

Finding the Fourth Proportional to 12,179.87, 18,268.60 and 8,256.33

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Solution

The fourth proportional to 12,179.87, 18,268.60 and 8,256.33 is: 12,383.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,179.87 : 18,268.60 = 8,256.33 : x
  2. Step 2: Convert to fraction form
    12,179.87/18,268.60 = 8,256.33/x
  3. Step 3: Cross multiply
    12,179.87x = 18,268.60 × 8,256.33
  4. Step 4: Simplify right side
    12,179.87x = 150,831,581.79
  5. Step 5: Solve for x
    x = 150,831,581.79/12,179.87
  6. Step 6: Final answer
    x = 12,383.68

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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.