Home / 12,178.78-18,268.11-2,944.78

Finding the Fourth Proportional to 12,178.78, 18,268.11 and 2,944.78

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Solution

The fourth proportional to 12,178.78, 18,268.11 and 2,944.78 is: 4,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.78 : 18,268.11 = 2,944.78 : x
  2. Step 2: Convert to fraction form
    12,178.78/18,268.11 = 2,944.78/x
  3. Step 3: Cross multiply
    12,178.78x = 18,268.11 × 2,944.78
  4. Step 4: Simplify right side
    12,178.78x = 53,795,564.97
  5. Step 5: Solve for x
    x = 53,795,564.97/12,178.78
  6. Step 6: Final answer
    x = 4,417.16

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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.