Home / 20,692.28-28,555.98-11,739.44

Finding the Fourth Proportional to 20,692.28, 28,555.98 and 11,739.44

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Solution

The fourth proportional to 20,692.28, 28,555.98 and 11,739.44 is: 16,200.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.28 : 28,555.98 = 11,739.44 : x
  2. Step 2: Convert to fraction form
    20,692.28/28,555.98 = 11,739.44/x
  3. Step 3: Cross multiply
    20,692.28x = 28,555.98 × 11,739.44
  4. Step 4: Simplify right side
    20,692.28x = 335,231,213.85
  5. Step 5: Solve for x
    x = 335,231,213.85/20,692.28
  6. Step 6: Final answer
    x = 16,200.79

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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.