Home / 20,692.38-28,555.49-11,261.01

Finding the Fourth Proportional to 20,692.38, 28,555.49 and 11,261.01

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Solution

The fourth proportional to 20,692.38, 28,555.49 and 11,261.01 is: 15,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.38 : 28,555.49 = 11,261.01 : x
  2. Step 2: Convert to fraction form
    20,692.38/28,555.49 = 11,261.01/x
  3. Step 3: Cross multiply
    20,692.38x = 28,555.49 × 11,261.01
  4. Step 4: Simplify right side
    20,692.38x = 321,563,658.44
  5. Step 5: Solve for x
    x = 321,563,658.44/20,692.38
  6. Step 6: Final answer
    x = 15,540.20

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Half scale
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Double scale
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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.