Home / 25,183.68-34,778.64-20,751.36

Finding the Fourth Proportional to 25,183.68, 34,778.64 and 20,751.36

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Solution

The fourth proportional to 25,183.68, 34,778.64 and 20,751.36 is: 28,657.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,183.68 : 34,778.64 = 20,751.36 : x
  2. Step 2: Convert to fraction form
    25,183.68/34,778.64 = 20,751.36/x
  3. Step 3: Cross multiply
    25,183.68x = 34,778.64 × 20,751.36
  4. Step 4: Simplify right side
    25,183.68x = 721,704,078.95
  5. Step 5: Solve for x
    x = 721,704,078.95/25,183.68
  6. Step 6: Final answer
    x = 28,657.61

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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.