Home / 39,904.04-55,067.93-21,999.68

Finding the Fourth Proportional to 39,904.04, 55,067.93 and 21,999.68

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Solution

The fourth proportional to 39,904.04, 55,067.93 and 21,999.68 is: 30,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.04 : 55,067.93 = 21,999.68 : x
  2. Step 2: Convert to fraction form
    39,904.04/55,067.93 = 21,999.68/x
  3. Step 3: Cross multiply
    39,904.04x = 55,067.93 × 21,999.68
  4. Step 4: Simplify right side
    39,904.04x = 1,211,476,452.92
  5. Step 5: Solve for x
    x = 1,211,476,452.92/39,904.04
  6. Step 6: Final answer
    x = 30,359.75

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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.