Home / 40,055.23-55,276.38-21,906.31

Finding the Fourth Proportional to 40,055.23, 55,276.38 and 21,906.31

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Solution

The fourth proportional to 40,055.23, 55,276.38 and 21,906.31 is: 30,230.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,055.23 : 55,276.38 = 21,906.31 : x
  2. Step 2: Convert to fraction form
    40,055.23/55,276.38 = 21,906.31/x
  3. Step 3: Cross multiply
    40,055.23x = 55,276.38 × 21,906.31
  4. Step 4: Simplify right side
    40,055.23x = 1,210,901,239.58
  5. Step 5: Solve for x
    x = 1,210,901,239.58/40,055.23
  6. Step 6: Final answer
    x = 30,230.79

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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.