Home / 13,836.88-20,706.60-11,912.32

Finding the Fourth Proportional to 13,836.88, 20,706.60 and 11,912.32

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Solution

The fourth proportional to 13,836.88, 20,706.60 and 11,912.32 is: 17,826.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.88 : 20,706.60 = 11,912.32 : x
  2. Step 2: Convert to fraction form
    13,836.88/20,706.60 = 11,912.32/x
  3. Step 3: Cross multiply
    13,836.88x = 20,706.60 × 11,912.32
  4. Step 4: Simplify right side
    13,836.88x = 246,663,645.31
  5. Step 5: Solve for x
    x = 246,663,645.31/13,836.88
  6. Step 6: Final answer
    x = 17,826.54

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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.