Home / 11,856.78-17,772.87-5,286.06

Finding the Fourth Proportional to 11,856.78, 17,772.87 and 5,286.06

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Solution

The fourth proportional to 11,856.78, 17,772.87 and 5,286.06 is: 7,923.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,856.78 : 17,772.87 = 5,286.06 : x
  2. Step 2: Convert to fraction form
    11,856.78/17,772.87 = 5,286.06/x
  3. Step 3: Cross multiply
    11,856.78x = 17,772.87 × 5,286.06
  4. Step 4: Simplify right side
    11,856.78x = 93,948,457.19
  5. Step 5: Solve for x
    x = 93,948,457.19/11,856.78
  6. Step 6: Final answer
    x = 7,923.61

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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.