Home / 31,797.11-43,871.10-19,872.56

Finding the Fourth Proportional to 31,797.11, 43,871.10 and 19,872.56

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Solution

The fourth proportional to 31,797.11, 43,871.10 and 19,872.56 is: 27,418.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,797.11 : 43,871.10 = 19,872.56 : x
  2. Step 2: Convert to fraction form
    31,797.11/43,871.10 = 19,872.56/x
  3. Step 3: Cross multiply
    31,797.11x = 43,871.10 × 19,872.56
  4. Step 4: Simplify right side
    31,797.11x = 871,831,067.02
  5. Step 5: Solve for x
    x = 871,831,067.02/31,797.11
  6. Step 6: Final answer
    x = 27,418.56

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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.