Home / 31,687.73-43,731.09-18,258.74

Finding the Fourth Proportional to 31,687.73, 43,731.09 and 18,258.74

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Solution

The fourth proportional to 31,687.73, 43,731.09 and 18,258.74 is: 25,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.73 : 43,731.09 = 18,258.74 : x
  2. Step 2: Convert to fraction form
    31,687.73/43,731.09 = 18,258.74/x
  3. Step 3: Cross multiply
    31,687.73x = 43,731.09 × 18,258.74
  4. Step 4: Simplify right side
    31,687.73x = 798,474,383.57
  5. Step 5: Solve for x
    x = 798,474,383.57/31,687.73
  6. Step 6: Final answer
    x = 25,198.22

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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.