Home / 20,464.31-28,236.07-11,508.54

Finding the Fourth Proportional to 20,464.31, 28,236.07 and 11,508.54

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Solution

The fourth proportional to 20,464.31, 28,236.07 and 11,508.54 is: 15,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.31 : 28,236.07 = 11,508.54 : x
  2. Step 2: Convert to fraction form
    20,464.31/28,236.07 = 11,508.54/x
  3. Step 3: Cross multiply
    20,464.31x = 28,236.07 × 11,508.54
  4. Step 4: Simplify right side
    20,464.31x = 324,956,103.96
  5. Step 5: Solve for x
    x = 324,956,103.96/20,464.31
  6. Step 6: Final answer
    x = 15,879.16

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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.