Home / 11,691.55-17,538.21-3,900.36

Finding the Fourth Proportional to 11,691.55, 17,538.21 and 3,900.36

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Solution

The fourth proportional to 11,691.55, 17,538.21 and 3,900.36 is: 5,850.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,691.55 : 17,538.21 = 3,900.36 : x
  2. Step 2: Convert to fraction form
    11,691.55/17,538.21 = 3,900.36/x
  3. Step 3: Cross multiply
    11,691.55x = 17,538.21 × 3,900.36
  4. Step 4: Simplify right side
    11,691.55x = 68,405,332.76
  5. Step 5: Solve for x
    x = 68,405,332.76/11,691.55
  6. Step 6: Final answer
    x = 5,850.84

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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.