Home / 13,181.23-18,190.07-7,212.85

Finding the Fourth Proportional to 13,181.23, 18,190.07 and 7,212.85

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Solution

The fourth proportional to 13,181.23, 18,190.07 and 7,212.85 is: 9,953.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,181.23 : 18,190.07 = 7,212.85 : x
  2. Step 2: Convert to fraction form
    13,181.23/18,190.07 = 7,212.85/x
  3. Step 3: Cross multiply
    13,181.23x = 18,190.07 × 7,212.85
  4. Step 4: Simplify right side
    13,181.23x = 131,202,191.91
  5. Step 5: Solve for x
    x = 131,202,191.91/13,181.23
  6. Step 6: Final answer
    x = 9,953.71

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Double scale
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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.