Home / 20,826.16-28,740.06-11,394.73

Finding the Fourth Proportional to 20,826.16, 28,740.06 and 11,394.73

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Solution

The fourth proportional to 20,826.16, 28,740.06 and 11,394.73 is: 15,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.16 : 28,740.06 = 11,394.73 : x
  2. Step 2: Convert to fraction form
    20,826.16/28,740.06 = 11,394.73/x
  3. Step 3: Cross multiply
    20,826.16x = 28,740.06 × 11,394.73
  4. Step 4: Simplify right side
    20,826.16x = 327,485,223.88
  5. Step 5: Solve for x
    x = 327,485,223.88/20,826.16
  6. Step 6: Final answer
    x = 15,724.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.