Home / 13,826.28-20,689.86-7,954.08

Finding the Fourth Proportional to 13,826.28, 20,689.86 and 7,954.08

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Solution

The fourth proportional to 13,826.28, 20,689.86 and 7,954.08 is: 11,902.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,826.28 : 20,689.86 = 7,954.08 : x
  2. Step 2: Convert to fraction form
    13,826.28/20,689.86 = 7,954.08/x
  3. Step 3: Cross multiply
    13,826.28x = 20,689.86 × 7,954.08
  4. Step 4: Simplify right side
    13,826.28x = 164,568,801.63
  5. Step 5: Solve for x
    x = 164,568,801.63/13,826.28
  6. Step 6: Final answer
    x = 11,902.61

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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.