Home / 31,843.35-43,940.33-18,412.57

Finding the Fourth Proportional to 31,843.35, 43,940.33 and 18,412.57

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Solution

The fourth proportional to 31,843.35, 43,940.33 and 18,412.57 is: 25,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,843.35 : 43,940.33 = 18,412.57 : x
  2. Step 2: Convert to fraction form
    31,843.35/43,940.33 = 18,412.57/x
  3. Step 3: Cross multiply
    31,843.35x = 43,940.33 × 18,412.57
  4. Step 4: Simplify right side
    31,843.35x = 809,054,246.07
  5. Step 5: Solve for x
    x = 809,054,246.07/31,843.35
  6. Step 6: Final answer
    x = 25,407.32

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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.