Home / 13,180.24-18,190.20-7,591.12

Finding the Fourth Proportional to 13,180.24, 18,190.20 and 7,591.12

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Solution

The fourth proportional to 13,180.24, 18,190.20 and 7,591.12 is: 10,476.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,180.24 : 18,190.20 = 7,591.12 : x
  2. Step 2: Convert to fraction form
    13,180.24/18,190.20 = 7,591.12/x
  3. Step 3: Cross multiply
    13,180.24x = 18,190.20 × 7,591.12
  4. Step 4: Simplify right side
    13,180.24x = 138,083,991.02
  5. Step 5: Solve for x
    x = 138,083,991.02/13,180.24
  6. Step 6: Final answer
    x = 10,476.59

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Half scale
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Double scale
Find fourth proportional to 13,181.24, 18,191.58 and 7,592.12
Similar ratio
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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.