Home / 31,843.21-43,947.68-18,411.87

Finding the Fourth Proportional to 31,843.21, 43,947.68 and 18,411.87

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Solution

The fourth proportional to 31,843.21, 43,947.68 and 18,411.87 is: 25,410.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.21 : 43,947.68 = 18,411.87 : x
  2. Step 2: Convert to fraction form
    31,843.21/43,947.68 = 18,411.87/x
  3. Step 3: Cross multiply
    31,843.21x = 43,947.68 × 18,411.87
  4. Step 4: Simplify right side
    31,843.21x = 809,158,977.21
  5. Step 5: Solve for x
    x = 809,158,977.21/31,843.21
  6. Step 6: Final answer
    x = 25,410.72

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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.