Home / 31,621.05-43,641.38-18,191.97

Finding the Fourth Proportional to 31,621.05, 43,641.38 and 18,191.97

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Solution

The fourth proportional to 31,621.05, 43,641.38 and 18,191.97 is: 25,107.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.05 : 43,641.38 = 18,191.97 : x
  2. Step 2: Convert to fraction form
    31,621.05/43,641.38 = 18,191.97/x
  3. Step 3: Cross multiply
    31,621.05x = 43,641.38 × 18,191.97
  4. Step 4: Simplify right side
    31,621.05x = 793,922,721.20
  5. Step 5: Solve for x
    x = 793,922,721.20/31,621.05
  6. Step 6: Final answer
    x = 25,107.41

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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.