Home / 11,945.78-17,918.68-4,154.60

Finding the Fourth Proportional to 11,945.78, 17,918.68 and 4,154.60

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Solution

The fourth proportional to 11,945.78, 17,918.68 and 4,154.60 is: 6,231.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.78 : 17,918.68 = 4,154.60 : x
  2. Step 2: Convert to fraction form
    11,945.78/17,918.68 = 4,154.60/x
  3. Step 3: Cross multiply
    11,945.78x = 17,918.68 × 4,154.60
  4. Step 4: Simplify right side
    11,945.78x = 74,444,947.93
  5. Step 5: Solve for x
    x = 74,444,947.93/11,945.78
  6. Step 6: Final answer
    x = 6,231.90

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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.