Home / 20,272.41-30,411.86-8,585.73

Finding the Fourth Proportional to 20,272.41, 30,411.86 and 8,585.73

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Solution

The fourth proportional to 20,272.41, 30,411.86 and 8,585.73 is: 12,879.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.41 : 30,411.86 = 8,585.73 : x
  2. Step 2: Convert to fraction form
    20,272.41/30,411.86 = 8,585.73/x
  3. Step 3: Cross multiply
    20,272.41x = 30,411.86 × 8,585.73
  4. Step 4: Simplify right side
    20,272.41x = 261,107,975.83
  5. Step 5: Solve for x
    x = 261,107,975.83/20,272.41
  6. Step 6: Final answer
    x = 12,879.97

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1.5x scale

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.