Home / 11,990.40-17,981.04-3,667.88

Finding the Fourth Proportional to 11,990.40, 17,981.04 and 3,667.88

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Solution

The fourth proportional to 11,990.40, 17,981.04 and 3,667.88 is: 5,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.40 : 17,981.04 = 3,667.88 : x
  2. Step 2: Convert to fraction form
    11,990.40/17,981.04 = 3,667.88/x
  3. Step 3: Cross multiply
    11,990.40x = 17,981.04 × 3,667.88
  4. Step 4: Simplify right side
    11,990.40x = 65,952,297.00
  5. Step 5: Solve for x
    x = 65,952,297.00/11,990.40
  6. Step 6: Final answer
    x = 5,500.43

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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.