Home / 40,067.28-55,290.96-21,917.61

Finding the Fourth Proportional to 40,067.28, 55,290.96 and 21,917.61

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Solution

The fourth proportional to 40,067.28, 55,290.96 and 21,917.61 is: 30,245.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,067.28 : 55,290.96 = 21,917.61 : x
  2. Step 2: Convert to fraction form
    40,067.28/55,290.96 = 21,917.61/x
  3. Step 3: Cross multiply
    40,067.28x = 55,290.96 × 21,917.61
  4. Step 4: Simplify right side
    40,067.28x = 1,211,845,697.81
  5. Step 5: Solve for x
    x = 1,211,845,697.81/40,067.28
  6. Step 6: Final answer
    x = 30,245.27

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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.