Home / 20,336.30-30,517.41-8,649.50

Finding the Fourth Proportional to 20,336.30, 30,517.41 and 8,649.50

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Solution

The fourth proportional to 20,336.30, 30,517.41 and 8,649.50 is: 12,979.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,336.30 : 30,517.41 = 8,649.50 : x
  2. Step 2: Convert to fraction form
    20,336.30/30,517.41 = 8,649.50/x
  3. Step 3: Cross multiply
    20,336.30x = 30,517.41 × 8,649.50
  4. Step 4: Simplify right side
    20,336.30x = 263,960,337.80
  5. Step 5: Solve for x
    x = 263,960,337.80/20,336.30
  6. Step 6: Final answer
    x = 12,979.76

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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.