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Finding the Fourth Proportional to 18,016.56, 27,028.08 and 7,629.12

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Solution

The fourth proportional to 18,016.56, 27,028.08 and 7,629.12 is: 11,445.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,016.56 : 27,028.08 = 7,629.12 : x
  2. Step 2: Convert to fraction form
    18,016.56/27,028.08 = 7,629.12/x
  3. Step 3: Cross multiply
    18,016.56x = 27,028.08 × 7,629.12
  4. Step 4: Simplify right side
    18,016.56x = 206,200,465.69
  5. Step 5: Solve for x
    x = 206,200,465.69/18,016.56
  6. Step 6: Final answer
    x = 11,445.05

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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.