Home / 12,255.45-18,383.19-3,490.37

Finding the Fourth Proportional to 12,255.45, 18,383.19 and 3,490.37

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Solution

The fourth proportional to 12,255.45, 18,383.19 and 3,490.37 is: 5,235.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.45 : 18,383.19 = 3,490.37 : x
  2. Step 2: Convert to fraction form
    12,255.45/18,383.19 = 3,490.37/x
  3. Step 3: Cross multiply
    12,255.45x = 18,383.19 × 3,490.37
  4. Step 4: Simplify right side
    12,255.45x = 64,164,025.51
  5. Step 5: Solve for x
    x = 64,164,025.51/12,255.45
  6. Step 6: Final answer
    x = 5,235.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.