Home / 11,982.14-17,981.20-4,190.95

Finding the Fourth Proportional to 11,982.14, 17,981.20 and 4,190.95

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Solution

The fourth proportional to 11,982.14, 17,981.20 and 4,190.95 is: 6,289.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,982.14 : 17,981.20 = 4,190.95 : x
  2. Step 2: Convert to fraction form
    11,982.14/17,981.20 = 4,190.95/x
  3. Step 3: Cross multiply
    11,982.14x = 17,981.20 × 4,190.95
  4. Step 4: Simplify right side
    11,982.14x = 75,358,220.23
  5. Step 5: Solve for x
    x = 75,358,220.23/11,982.14
  6. Step 6: Final answer
    x = 6,289.21

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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.