Home / 20,896.92-31,345.70-6,858.41

Finding the Fourth Proportional to 20,896.92, 31,345.70 and 6,858.41

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Solution

The fourth proportional to 20,896.92, 31,345.70 and 6,858.41 is: 10,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,896.92 : 31,345.70 = 6,858.41 : x
  2. Step 2: Convert to fraction form
    20,896.92/31,345.70 = 6,858.41/x
  3. Step 3: Cross multiply
    20,896.92x = 31,345.70 × 6,858.41
  4. Step 4: Simplify right side
    20,896.92x = 214,981,471.32
  5. Step 5: Solve for x
    x = 214,981,471.32/20,896.92
  6. Step 6: Final answer
    x = 10,287.71

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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.