Home / 20,982.57-31,493.30-10,601.61

Finding the Fourth Proportional to 20,982.57, 31,493.30 and 10,601.61

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Solution

The fourth proportional to 20,982.57, 31,493.30 and 10,601.61 is: 15,912.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.57 : 31,493.30 = 10,601.61 : x
  2. Step 2: Convert to fraction form
    20,982.57/31,493.30 = 10,601.61/x
  3. Step 3: Cross multiply
    20,982.57x = 31,493.30 × 10,601.61
  4. Step 4: Simplify right side
    20,982.57x = 333,879,631.20
  5. Step 5: Solve for x
    x = 333,879,631.20/20,982.57
  6. Step 6: Final answer
    x = 15,912.24

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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.