Home / 20,692.82-28,555.54-11,261.18

Finding the Fourth Proportional to 20,692.82, 28,555.54 and 11,261.18

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Solution

The fourth proportional to 20,692.82, 28,555.54 and 11,261.18 is: 15,540.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.82 : 28,555.54 = 11,261.18 : x
  2. Step 2: Convert to fraction form
    20,692.82/28,555.54 = 11,261.18/x
  3. Step 3: Cross multiply
    20,692.82x = 28,555.54 × 11,261.18
  4. Step 4: Simplify right side
    20,692.82x = 321,568,905.01
  5. Step 5: Solve for x
    x = 321,568,905.01/20,692.82
  6. Step 6: Final answer
    x = 15,540.12

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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.