Home / 11,938.78-17,907.76-4,147.39

Finding the Fourth Proportional to 11,938.78, 17,907.76 and 4,147.39

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Solution

The fourth proportional to 11,938.78, 17,907.76 and 4,147.39 is: 6,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.78 : 17,907.76 = 4,147.39 : x
  2. Step 2: Convert to fraction form
    11,938.78/17,907.76 = 4,147.39/x
  3. Step 3: Cross multiply
    11,938.78x = 17,907.76 × 4,147.39
  4. Step 4: Simplify right side
    11,938.78x = 74,270,464.75
  5. Step 5: Solve for x
    x = 74,270,464.75/11,938.78
  6. Step 6: Final answer
    x = 6,220.94

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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.