Home / 20,731.88-28,692.22-20,234.42

Finding the Fourth Proportional to 20,731.88, 28,692.22 and 20,234.42

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Solution

The fourth proportional to 20,731.88, 28,692.22 and 20,234.42 is: 28,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.88 : 28,692.22 = 20,234.42 : x
  2. Step 2: Convert to fraction form
    20,731.88/28,692.22 = 20,234.42/x
  3. Step 3: Cross multiply
    20,731.88x = 28,692.22 × 20,234.42
  4. Step 4: Simplify right side
    20,731.88x = 580,570,430.21
  5. Step 5: Solve for x
    x = 580,570,430.21/20,731.88
  6. Step 6: Final answer
    x = 28,003.75

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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.