Home / 20,221.98-27,907.11-11,723.96

Finding the Fourth Proportional to 20,221.98, 27,907.11 and 11,723.96

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Solution

The fourth proportional to 20,221.98, 27,907.11 and 11,723.96 is: 16,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.98 : 27,907.11 = 11,723.96 : x
  2. Step 2: Convert to fraction form
    20,221.98/27,907.11 = 11,723.96/x
  3. Step 3: Cross multiply
    20,221.98x = 27,907.11 × 11,723.96
  4. Step 4: Simplify right side
    20,221.98x = 327,181,701.82
  5. Step 5: Solve for x
    x = 327,181,701.82/20,221.98
  6. Step 6: Final answer
    x = 16,179.51

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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.