Home / 20,336.05-30,517.04-8,649.25

Finding the Fourth Proportional to 20,336.05, 30,517.04 and 8,649.25

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Solution

The fourth proportional to 20,336.05, 30,517.04 and 8,649.25 is: 12,979.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.05 : 30,517.04 = 8,649.25 : x
  2. Step 2: Convert to fraction form
    20,336.05/30,517.04 = 8,649.25/x
  3. Step 3: Cross multiply
    20,336.05x = 30,517.04 × 8,649.25
  4. Step 4: Simplify right side
    20,336.05x = 263,949,464.97
  5. Step 5: Solve for x
    x = 263,949,464.97/20,336.05
  6. Step 6: Final answer
    x = 12,979.39

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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.