Home / 40,022.56-55,231.32-21,873.64

Finding the Fourth Proportional to 40,022.56, 55,231.32 and 21,873.64

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Solution

The fourth proportional to 40,022.56, 55,231.32 and 21,873.64 is: 30,185.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,022.56 : 55,231.32 = 21,873.64 : x
  2. Step 2: Convert to fraction form
    40,022.56/55,231.32 = 21,873.64/x
  3. Step 3: Cross multiply
    40,022.56x = 55,231.32 × 21,873.64
  4. Step 4: Simplify right side
    40,022.56x = 1,208,110,010.40
  5. Step 5: Solve for x
    x = 1,208,110,010.40/40,022.56
  6. Step 6: Final answer
    x = 30,185.73

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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.