Home / 11,745.58-17,618.37-5,171.80

Finding the Fourth Proportional to 11,745.58, 17,618.37 and 5,171.80

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Solution

The fourth proportional to 11,745.58, 17,618.37 and 5,171.80 is: 7,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.58 : 17,618.37 = 5,171.80 : x
  2. Step 2: Convert to fraction form
    11,745.58/17,618.37 = 5,171.80/x
  3. Step 3: Cross multiply
    11,745.58x = 17,618.37 × 5,171.80
  4. Step 4: Simplify right side
    11,745.58x = 91,118,685.97
  5. Step 5: Solve for x
    x = 91,118,685.97/11,745.58
  6. Step 6: Final answer
    x = 7,757.70

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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.