Home / 20,940.53-28,891.41-11,986.35

Finding the Fourth Proportional to 20,940.53, 28,891.41 and 11,986.35

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Solution

The fourth proportional to 20,940.53, 28,891.41 and 11,986.35 is: 16,537.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.53 : 28,891.41 = 11,986.35 : x
  2. Step 2: Convert to fraction form
    20,940.53/28,891.41 = 11,986.35/x
  3. Step 3: Cross multiply
    20,940.53x = 28,891.41 × 11,986.35
  4. Step 4: Simplify right side
    20,940.53x = 346,302,676.44
  5. Step 5: Solve for x
    x = 346,302,676.44/20,940.53
  6. Step 6: Final answer
    x = 16,537.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.