Home / 39,904.42-55,067.88-21,999.36

Finding the Fourth Proportional to 39,904.42, 55,067.88 and 21,999.36

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Solution

The fourth proportional to 39,904.42, 55,067.88 and 21,999.36 is: 30,359.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.42 : 55,067.88 = 21,999.36 : x
  2. Step 2: Convert to fraction form
    39,904.42/55,067.88 = 21,999.36/x
  3. Step 3: Cross multiply
    39,904.42x = 55,067.88 × 21,999.36
  4. Step 4: Simplify right side
    39,904.42x = 1,211,458,116.56
  5. Step 5: Solve for x
    x = 1,211,458,116.56/39,904.42
  6. Step 6: Final answer
    x = 30,359.00

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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.