Home / 20,375.89-30,574.37-8,685.97

Finding the Fourth Proportional to 20,375.89, 30,574.37 and 8,685.97

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Solution

The fourth proportional to 20,375.89, 30,574.37 and 8,685.97 is: 13,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.89 : 30,574.37 = 8,685.97 : x
  2. Step 2: Convert to fraction form
    20,375.89/30,574.37 = 8,685.97/x
  3. Step 3: Cross multiply
    20,375.89x = 30,574.37 × 8,685.97
  4. Step 4: Simplify right side
    20,375.89x = 265,568,060.59
  5. Step 5: Solve for x
    x = 265,568,060.59/20,375.89
  6. Step 6: Final answer
    x = 13,033.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.