Home / 12,020.80-18,035.52-6,181.12

Finding the Fourth Proportional to 12,020.80, 18,035.52 and 6,181.12

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Solution

The fourth proportional to 12,020.80, 18,035.52 and 6,181.12 is: 9,273.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,020.80 : 18,035.52 = 6,181.12 : x
  2. Step 2: Convert to fraction form
    12,020.80/18,035.52 = 6,181.12/x
  3. Step 3: Cross multiply
    12,020.80x = 18,035.52 × 6,181.12
  4. Step 4: Simplify right side
    12,020.80x = 111,479,713.38
  5. Step 5: Solve for x
    x = 111,479,713.38/12,020.80
  6. Step 6: Final answer
    x = 9,273.90

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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.