Home / 11,986.56-17,981.64-4,194.75

Finding the Fourth Proportional to 11,986.56, 17,981.64 and 4,194.75

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Solution

The fourth proportional to 11,986.56, 17,981.64 and 4,194.75 is: 6,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.56 : 17,981.64 = 4,194.75 : x
  2. Step 2: Convert to fraction form
    11,986.56/17,981.64 = 4,194.75/x
  3. Step 3: Cross multiply
    11,986.56x = 17,981.64 × 4,194.75
  4. Step 4: Simplify right side
    11,986.56x = 75,428,484.39
  5. Step 5: Solve for x
    x = 75,428,484.39/11,986.56
  6. Step 6: Final answer
    x = 6,292.75

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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.