Home / 40,028.32-55,239.49-21,879.56

Finding the Fourth Proportional to 40,028.32, 55,239.49 and 21,879.56

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Solution

The fourth proportional to 40,028.32, 55,239.49 and 21,879.56 is: 30,194.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,028.32 : 55,239.49 = 21,879.56 : x
  2. Step 2: Convert to fraction form
    40,028.32/55,239.49 = 21,879.56/x
  3. Step 3: Cross multiply
    40,028.32x = 55,239.49 × 21,879.56
  4. Step 4: Simplify right side
    40,028.32x = 1,208,615,543.03
  5. Step 5: Solve for x
    x = 1,208,615,543.03/40,028.32
  6. Step 6: Final answer
    x = 30,194.01

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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.