Home / 20,242.80-27,928.44-11,288.64

Finding the Fourth Proportional to 20,242.80, 27,928.44 and 11,288.64

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Solution

The fourth proportional to 20,242.80, 27,928.44 and 11,288.64 is: 15,574.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.80 : 27,928.44 = 11,288.64 : x
  2. Step 2: Convert to fraction form
    20,242.80/27,928.44 = 11,288.64/x
  3. Step 3: Cross multiply
    20,242.80x = 27,928.44 × 11,288.64
  4. Step 4: Simplify right side
    20,242.80x = 315,274,104.92
  5. Step 5: Solve for x
    x = 315,274,104.92/20,242.80
  6. Step 6: Final answer
    x = 15,574.63

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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.