Home / 20,851.97-28,768.57-11,893.03

Finding the Fourth Proportional to 20,851.97, 28,768.57 and 11,893.03

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Solution

The fourth proportional to 20,851.97, 28,768.57 and 11,893.03 is: 16,408.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.97 : 28,768.57 = 11,893.03 : x
  2. Step 2: Convert to fraction form
    20,851.97/28,768.57 = 11,893.03/x
  3. Step 3: Cross multiply
    20,851.97x = 28,768.57 × 11,893.03
  4. Step 4: Simplify right side
    20,851.97x = 342,145,466.07
  5. Step 5: Solve for x
    x = 342,145,466.07/20,851.97
  6. Step 6: Final answer
    x = 16,408.30

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1.5x scale

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.