Home / 11,987.87-17,981.19-4,196.07

Finding the Fourth Proportional to 11,987.87, 17,981.19 and 4,196.07

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Solution

The fourth proportional to 11,987.87, 17,981.19 and 4,196.07 is: 6,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,987.87 : 17,981.19 = 4,196.07 : x
  2. Step 2: Convert to fraction form
    11,987.87/17,981.19 = 4,196.07/x
  3. Step 3: Cross multiply
    11,987.87x = 17,981.19 × 4,196.07
  4. Step 4: Simplify right side
    11,987.87x = 75,450,331.92
  5. Step 5: Solve for x
    x = 75,450,331.92/11,987.87
  6. Step 6: Final answer
    x = 6,293.89

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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.