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Finding the Fourth Proportional to 11,745.88, 17,618.82 and 3,426.74

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Solution

The fourth proportional to 11,745.88, 17,618.82 and 3,426.74 is: 5,140.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,745.88 : 17,618.82 = 3,426.74 : x
  2. Step 2: Convert to fraction form
    11,745.88/17,618.82 = 3,426.74/x
  3. Step 3: Cross multiply
    11,745.88x = 17,618.82 × 3,426.74
  4. Step 4: Simplify right side
    11,745.88x = 60,375,080.37
  5. Step 5: Solve for x
    x = 60,375,080.37/11,745.88
  6. Step 6: Final answer
    x = 5,140.11

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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.