Home / 11,771.25-17,656.84-7,391.78

Finding the Fourth Proportional to 11,771.25, 17,656.84 and 7,391.78

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Solution

The fourth proportional to 11,771.25, 17,656.84 and 7,391.78 is: 11,087.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,771.25 : 17,656.84 = 7,391.78 : x
  2. Step 2: Convert to fraction form
    11,771.25/17,656.84 = 7,391.78/x
  3. Step 3: Cross multiply
    11,771.25x = 17,656.84 × 7,391.78
  4. Step 4: Simplify right side
    11,771.25x = 130,515,476.78
  5. Step 5: Solve for x
    x = 130,515,476.78/11,771.25
  6. Step 6: Final answer
    x = 11,087.65

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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.