Home / 20,826.32-28,739.61-11,394.68

Finding the Fourth Proportional to 20,826.32, 28,739.61 and 11,394.68

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Solution

The fourth proportional to 20,826.32, 28,739.61 and 11,394.68 is: 15,724.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,826.32 : 28,739.61 = 11,394.68 : x
  2. Step 2: Convert to fraction form
    20,826.32/28,739.61 = 11,394.68/x
  3. Step 3: Cross multiply
    20,826.32x = 28,739.61 × 11,394.68
  4. Step 4: Simplify right side
    20,826.32x = 327,478,515.58
  5. Step 5: Solve for x
    x = 327,478,515.58/20,826.32
  6. Step 6: Final answer
    x = 15,724.27

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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.