Home / 20,321.92-30,478.26-9,786.57

Finding the Fourth Proportional to 20,321.92, 30,478.26 and 9,786.57

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Solution

The fourth proportional to 20,321.92, 30,478.26 and 9,786.57 is: 14,677.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.92 : 30,478.26 = 9,786.57 : x
  2. Step 2: Convert to fraction form
    20,321.92/30,478.26 = 9,786.57/x
  3. Step 3: Cross multiply
    20,321.92x = 30,478.26 × 9,786.57
  4. Step 4: Simplify right side
    20,321.92x = 298,277,624.97
  5. Step 5: Solve for x
    x = 298,277,624.97/20,321.92
  6. Step 6: Final answer
    x = 14,677.63

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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.