Home / 11,821.62-17,719.66-5,238.75

Finding the Fourth Proportional to 11,821.62, 17,719.66 and 5,238.75

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Solution

The fourth proportional to 11,821.62, 17,719.66 and 5,238.75 is: 7,852.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,821.62 : 17,719.66 = 5,238.75 : x
  2. Step 2: Convert to fraction form
    11,821.62/17,719.66 = 5,238.75/x
  3. Step 3: Cross multiply
    11,821.62x = 17,719.66 × 5,238.75
  4. Step 4: Simplify right side
    11,821.62x = 92,828,868.83
  5. Step 5: Solve for x
    x = 92,828,868.83/11,821.62
  6. Step 6: Final answer
    x = 7,852.47

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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.