Home / 20,510.92-30,821.97-11,157.85

Finding the Fourth Proportional to 20,510.92, 30,821.97 and 11,157.85

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Solution

The fourth proportional to 20,510.92, 30,821.97 and 11,157.85 is: 16,767.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.92 : 30,821.97 = 11,157.85 : x
  2. Step 2: Convert to fraction form
    20,510.92/30,821.97 = 11,157.85/x
  3. Step 3: Cross multiply
    20,510.92x = 30,821.97 × 11,157.85
  4. Step 4: Simplify right side
    20,510.92x = 343,906,935.57
  5. Step 5: Solve for x
    x = 343,906,935.57/20,510.92
  6. Step 6: Final answer
    x = 16,767.02

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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.