Home / 30,380.15-41,919.57-20,292.41

Finding the Fourth Proportional to 30,380.15, 41,919.57 and 20,292.41

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Solution

The fourth proportional to 30,380.15, 41,919.57 and 20,292.41 is: 28,000.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,380.15 : 41,919.57 = 20,292.41 : x
  2. Step 2: Convert to fraction form
    30,380.15/41,919.57 = 20,292.41/x
  3. Step 3: Cross multiply
    30,380.15x = 41,919.57 × 20,292.41
  4. Step 4: Simplify right side
    30,380.15x = 850,648,891.87
  5. Step 5: Solve for x
    x = 850,648,891.87/30,380.15
  6. Step 6: Final answer
    x = 28,000.16

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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.