Home / 20,692.30-28,557.22-11,742.61

Finding the Fourth Proportional to 20,692.30, 28,557.22 and 11,742.61

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Solution

The fourth proportional to 20,692.30, 28,557.22 and 11,742.61 is: 16,205.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.30 : 28,557.22 = 11,742.61 : x
  2. Step 2: Convert to fraction form
    20,692.30/28,557.22 = 11,742.61/x
  3. Step 3: Cross multiply
    20,692.30x = 28,557.22 × 11,742.61
  4. Step 4: Simplify right side
    20,692.30x = 335,336,297.14
  5. Step 5: Solve for x
    x = 335,336,297.14/20,692.30
  6. Step 6: Final answer
    x = 16,205.85

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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.