Home / 31,896.12-47,812.94-11,890.96

Finding the Fourth Proportional to 31,896.12, 47,812.94 and 11,890.96

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Solution

The fourth proportional to 31,896.12, 47,812.94 and 11,890.96 is: 17,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,896.12 : 47,812.94 = 11,890.96 : x
  2. Step 2: Convert to fraction form
    31,896.12/47,812.94 = 11,890.96/x
  3. Step 3: Cross multiply
    31,896.12x = 47,812.94 × 11,890.96
  4. Step 4: Simplify right side
    31,896.12x = 568,541,757.02
  5. Step 5: Solve for x
    x = 568,541,757.02/31,896.12
  6. Step 6: Final answer
    x = 17,824.79

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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.