Home / 11,987.60-17,981.36-3,222.56

Finding the Fourth Proportional to 11,987.60, 17,981.36 and 3,222.56

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Solution

The fourth proportional to 11,987.60, 17,981.36 and 3,222.56 is: 4,833.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.60 : 17,981.36 = 3,222.56 : x
  2. Step 2: Convert to fraction form
    11,987.60/17,981.36 = 3,222.56/x
  3. Step 3: Cross multiply
    11,987.60x = 17,981.36 × 3,222.56
  4. Step 4: Simplify right side
    11,987.60x = 57,946,011.48
  5. Step 5: Solve for x
    x = 57,946,011.48/11,987.60
  6. Step 6: Final answer
    x = 4,833.83

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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.