Home / 20,834.24-31,244.82-6,980

Finding the Fourth Proportional to 20,834.24, 31,244.82 and 6,980

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Solution

The fourth proportional to 20,834.24, 31,244.82 and 6,980 is: 10,467.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,834.24 : 31,244.82 = 6,980 : x
  2. Step 2: Convert to fraction form
    20,834.24/31,244.82 = 6,980/x
  3. Step 3: Cross multiply
    20,834.24x = 31,244.82 × 6,980
  4. Step 4: Simplify right side
    20,834.24x = 218,088,843.60
  5. Step 5: Solve for x
    x = 218,088,843.60/20,834.24
  6. Step 6: Final answer
    x = 10,467.81

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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.