Home / 20,872.99-31,310.09-6,081.58

Finding the Fourth Proportional to 20,872.99, 31,310.09 and 6,081.58

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Solution

The fourth proportional to 20,872.99, 31,310.09 and 6,081.58 is: 9,122.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,872.99 : 31,310.09 = 6,081.58 : x
  2. Step 2: Convert to fraction form
    20,872.99/31,310.09 = 6,081.58/x
  3. Step 3: Cross multiply
    20,872.99x = 31,310.09 × 6,081.58
  4. Step 4: Simplify right side
    20,872.99x = 190,414,630.18
  5. Step 5: Solve for x
    x = 190,414,630.18/20,872.99
  6. Step 6: Final answer
    x = 9,122.54

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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.