Home / 31,651.68-43,685.17-20,335.33

Finding the Fourth Proportional to 31,651.68, 43,685.17 and 20,335.33

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Solution

The fourth proportional to 31,651.68, 43,685.17 and 20,335.33 is: 28,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,651.68 : 43,685.17 = 20,335.33 : x
  2. Step 2: Convert to fraction form
    31,651.68/43,685.17 = 20,335.33/x
  3. Step 3: Cross multiply
    31,651.68x = 43,685.17 × 20,335.33
  4. Step 4: Simplify right side
    31,651.68x = 888,352,351.82
  5. Step 5: Solve for x
    x = 888,352,351.82/31,651.68
  6. Step 6: Final answer
    x = 28,066.51

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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.