Home / 20,965.92-31,442.21-6,923.33

Finding the Fourth Proportional to 20,965.92, 31,442.21 and 6,923.33

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Solution

The fourth proportional to 20,965.92, 31,442.21 and 6,923.33 is: 10,382.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,965.92 : 31,442.21 = 6,923.33 : x
  2. Step 2: Convert to fraction form
    20,965.92/31,442.21 = 6,923.33/x
  3. Step 3: Cross multiply
    20,965.92x = 31,442.21 × 6,923.33
  4. Step 4: Simplify right side
    20,965.92x = 217,684,603.93
  5. Step 5: Solve for x
    x = 217,684,603.93/20,965.92
  6. Step 6: Final answer
    x = 10,382.79

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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.