Home / 20,180.82-30,270.88-9,079.64

Finding the Fourth Proportional to 20,180.82, 30,270.88 and 9,079.64

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Solution

The fourth proportional to 20,180.82, 30,270.88 and 9,079.64 is: 13,619.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.82 : 30,270.88 = 9,079.64 : x
  2. Step 2: Convert to fraction form
    20,180.82/30,270.88 = 9,079.64/x
  3. Step 3: Cross multiply
    20,180.82x = 30,270.88 × 9,079.64
  4. Step 4: Simplify right side
    20,180.82x = 274,848,692.88
  5. Step 5: Solve for x
    x = 274,848,692.88/20,180.82
  6. Step 6: Final answer
    x = 13,619.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.