Home / 31,121.37-42,935.22-19,163.97

Finding the Fourth Proportional to 31,121.37, 42,935.22 and 19,163.97

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Solution

The fourth proportional to 31,121.37, 42,935.22 and 19,163.97 is: 26,438.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,121.37 : 42,935.22 = 19,163.97 : x
  2. Step 2: Convert to fraction form
    31,121.37/42,935.22 = 19,163.97/x
  3. Step 3: Cross multiply
    31,121.37x = 42,935.22 × 19,163.97
  4. Step 4: Simplify right side
    31,121.37x = 822,809,268.02
  5. Step 5: Solve for x
    x = 822,809,268.02/31,121.37
  6. Step 6: Final answer
    x = 26,438.72

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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.