Home / 13,728.08-18,958.19-11,726.97

Finding the Fourth Proportional to 13,728.08, 18,958.19 and 11,726.97

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Solution

The fourth proportional to 13,728.08, 18,958.19 and 11,726.97 is: 16,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.08 : 18,958.19 = 11,726.97 : x
  2. Step 2: Convert to fraction form
    13,728.08/18,958.19 = 11,726.97/x
  3. Step 3: Cross multiply
    13,728.08x = 18,958.19 × 11,726.97
  4. Step 4: Simplify right side
    13,728.08x = 222,322,125.38
  5. Step 5: Solve for x
    x = 222,322,125.38/13,728.08
  6. Step 6: Final answer
    x = 16,194.70

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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.