Home / 12,082.82-18,129.40-6,540.09

Finding the Fourth Proportional to 12,082.82, 18,129.40 and 6,540.09

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Solution

The fourth proportional to 12,082.82, 18,129.40 and 6,540.09 is: 9,812.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,082.82 : 18,129.40 = 6,540.09 : x
  2. Step 2: Convert to fraction form
    12,082.82/18,129.40 = 6,540.09/x
  3. Step 3: Cross multiply
    12,082.82x = 18,129.40 × 6,540.09
  4. Step 4: Simplify right side
    12,082.82x = 118,567,874.95
  5. Step 5: Solve for x
    x = 118,567,874.95/12,082.82
  6. Step 6: Final answer
    x = 9,812.93

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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.