Home / 20,649.35-30,934.22-12,336.02

Finding the Fourth Proportional to 20,649.35, 30,934.22 and 12,336.02

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Solution

The fourth proportional to 20,649.35, 30,934.22 and 12,336.02 is: 18,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,649.35 : 30,934.22 = 12,336.02 : x
  2. Step 2: Convert to fraction form
    20,649.35/30,934.22 = 12,336.02/x
  3. Step 3: Cross multiply
    20,649.35x = 30,934.22 × 12,336.02
  4. Step 4: Simplify right side
    20,649.35x = 381,604,940.25
  5. Step 5: Solve for x
    x = 381,604,940.25/20,649.35
  6. Step 6: Final answer
    x = 18,480.24

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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.