Home / 39,904.04-55,067.37-21,998.99

Finding the Fourth Proportional to 39,904.04, 55,067.37 and 21,998.99

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Solution

The fourth proportional to 39,904.04, 55,067.37 and 21,998.99 is: 30,358.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,904.04 : 55,067.37 = 21,998.99 : x
  2. Step 2: Convert to fraction form
    39,904.04/55,067.37 = 21,998.99/x
  3. Step 3: Cross multiply
    39,904.04x = 55,067.37 × 21,998.99
  4. Step 4: Simplify right side
    39,904.04x = 1,211,426,246.62
  5. Step 5: Solve for x
    x = 1,211,426,246.62/39,904.04
  6. Step 6: Final answer
    x = 30,358.49

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Double scale
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Similar ratio
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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.