Home / 12,255.60-18,383.28-3,936.48

Finding the Fourth Proportional to 12,255.60, 18,383.28 and 3,936.48

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Solution

The fourth proportional to 12,255.60, 18,383.28 and 3,936.48 is: 5,904.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.60 : 18,383.28 = 3,936.48 : x
  2. Step 2: Convert to fraction form
    12,255.60/18,383.28 = 3,936.48/x
  3. Step 3: Cross multiply
    12,255.60x = 18,383.28 × 3,936.48
  4. Step 4: Simplify right side
    12,255.60x = 72,365,414.05
  5. Step 5: Solve for x
    x = 72,365,414.05/12,255.60
  6. Step 6: Final answer
    x = 5,904.68

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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.