Home / 31,436.97-43,364.61-20,258.97

Finding the Fourth Proportional to 31,436.97, 43,364.61 and 20,258.97

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Solution

The fourth proportional to 31,436.97, 43,364.61 and 20,258.97 is: 27,945.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,436.97 : 43,364.61 = 20,258.97 : x
  2. Step 2: Convert to fraction form
    31,436.97/43,364.61 = 20,258.97/x
  3. Step 3: Cross multiply
    31,436.97x = 43,364.61 × 20,258.97
  4. Step 4: Simplify right side
    31,436.97x = 878,522,333.05
  5. Step 5: Solve for x
    x = 878,522,333.05/31,436.97
  6. Step 6: Final answer
    x = 27,945.52

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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.