Home / 31,685.20-43,727.68-18,257.32

Finding the Fourth Proportional to 31,685.20, 43,727.68 and 18,257.32

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Solution

The fourth proportional to 31,685.20, 43,727.68 and 18,257.32 is: 25,196.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.20 : 43,727.68 = 18,257.32 : x
  2. Step 2: Convert to fraction form
    31,685.20/43,727.68 = 18,257.32/x
  3. Step 3: Cross multiply
    31,685.20x = 43,727.68 × 18,257.32
  4. Step 4: Simplify right side
    31,685.20x = 798,350,246.62
  5. Step 5: Solve for x
    x = 798,350,246.62/31,685.20
  6. Step 6: Final answer
    x = 25,196.32

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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.