Home / 31,689.41-43,731.97-18,258.39

Finding the Fourth Proportional to 31,689.41, 43,731.97 and 18,258.39

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Solution

The fourth proportional to 31,689.41, 43,731.97 and 18,258.39 is: 25,196.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,689.41 : 43,731.97 = 18,258.39 : x
  2. Step 2: Convert to fraction form
    31,689.41/43,731.97 = 18,258.39/x
  3. Step 3: Cross multiply
    31,689.41x = 43,731.97 × 18,258.39
  4. Step 4: Simplify right side
    31,689.41x = 798,475,318.08
  5. Step 5: Solve for x
    x = 798,475,318.08/31,689.41
  6. Step 6: Final answer
    x = 25,196.92

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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.