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Finding the Fourth Proportional to 18,155.24, 27,229.62 and 4,828.31

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Solution

The fourth proportional to 18,155.24, 27,229.62 and 4,828.31 is: 7,241.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,155.24 : 27,229.62 = 4,828.31 : x
  2. Step 2: Convert to fraction form
    18,155.24/27,229.62 = 4,828.31/x
  3. Step 3: Cross multiply
    18,155.24x = 27,229.62 × 4,828.31
  4. Step 4: Simplify right side
    18,155.24x = 131,473,046.54
  5. Step 5: Solve for x
    x = 131,473,046.54/18,155.24
  6. Step 6: Final answer
    x = 7,241.60

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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.