Home / 20,743.56-28,625.40-11,791.44

Finding the Fourth Proportional to 20,743.56, 28,625.40 and 11,791.44

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Solution

The fourth proportional to 20,743.56, 28,625.40 and 11,791.44 is: 16,271.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.56 : 28,625.40 = 11,791.44 : x
  2. Step 2: Convert to fraction form
    20,743.56/28,625.40 = 11,791.44/x
  3. Step 3: Cross multiply
    20,743.56x = 28,625.40 × 11,791.44
  4. Step 4: Simplify right side
    20,743.56x = 337,534,686.58
  5. Step 5: Solve for x
    x = 337,534,686.58/20,743.56
  6. Step 6: Final answer
    x = 16,271.78

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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.