Home / 13,728.92-18,945.87-7,441.29

Finding the Fourth Proportional to 13,728.92, 18,945.87 and 7,441.29

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Solution

The fourth proportional to 13,728.92, 18,945.87 and 7,441.29 is: 10,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.92 : 18,945.87 = 7,441.29 : x
  2. Step 2: Convert to fraction form
    13,728.92/18,945.87 = 7,441.29/x
  3. Step 3: Cross multiply
    13,728.92x = 18,945.87 × 7,441.29
  4. Step 4: Simplify right side
    13,728.92x = 140,981,712.97
  5. Step 5: Solve for x
    x = 140,981,712.97/13,728.92
  6. Step 6: Final answer
    x = 10,268.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.