Home / 20,692.56-28,555.83-11,261.19

Finding the Fourth Proportional to 20,692.56, 28,555.83 and 11,261.19

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Solution

The fourth proportional to 20,692.56, 28,555.83 and 11,261.19 is: 15,540.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,692.56 : 28,555.83 = 11,261.19 : x
  2. Step 2: Convert to fraction form
    20,692.56/28,555.83 = 11,261.19/x
  3. Step 3: Cross multiply
    20,692.56x = 28,555.83 × 11,261.19
  4. Step 4: Simplify right side
    20,692.56x = 321,572,627.24
  5. Step 5: Solve for x
    x = 321,572,627.24/20,692.56
  6. Step 6: Final answer
    x = 15,540.50

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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.