Home / 31,427.91-43,374.15-18,684.18

Finding the Fourth Proportional to 31,427.91, 43,374.15 and 18,684.18

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Solution

The fourth proportional to 31,427.91, 43,374.15 and 18,684.18 is: 25,786.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,427.91 : 43,374.15 = 18,684.18 : x
  2. Step 2: Convert to fraction form
    31,427.91/43,374.15 = 18,684.18/x
  3. Step 3: Cross multiply
    31,427.91x = 43,374.15 × 18,684.18
  4. Step 4: Simplify right side
    31,427.91x = 810,410,425.95
  5. Step 5: Solve for x
    x = 810,410,425.95/31,427.91
  6. Step 6: Final answer
    x = 25,786.33

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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.