Home / 12,255.78-18,383.40-3,935.46

Finding the Fourth Proportional to 12,255.78, 18,383.40 and 3,935.46

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Solution

The fourth proportional to 12,255.78, 18,383.40 and 3,935.46 is: 5,903.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.78 : 18,383.40 = 3,935.46 : x
  2. Step 2: Convert to fraction form
    12,255.78/18,383.40 = 3,935.46/x
  3. Step 3: Cross multiply
    12,255.78x = 18,383.40 × 3,935.46
  4. Step 4: Simplify right side
    12,255.78x = 72,347,135.36
  5. Step 5: Solve for x
    x = 72,347,135.36/12,255.78
  6. Step 6: Final answer
    x = 5,903.10

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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.