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Finding the Fourth Proportional to 18,238.96, 27,362.08 and 5,760.88

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Solution

The fourth proportional to 18,238.96, 27,362.08 and 5,760.88 is: 8,642.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,238.96 : 27,362.08 = 5,760.88 : x
  2. Step 2: Convert to fraction form
    18,238.96/27,362.08 = 5,760.88/x
  3. Step 3: Cross multiply
    18,238.96x = 27,362.08 × 5,760.88
  4. Step 4: Simplify right side
    18,238.96x = 157,629,659.43
  5. Step 5: Solve for x
    x = 157,629,659.43/18,238.96
  6. Step 6: Final answer
    x = 8,642.47

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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.