Home / 20,240.46-30,360.72-8,553.78

Finding the Fourth Proportional to 20,240.46, 30,360.72 and 8,553.78

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Solution

The fourth proportional to 20,240.46, 30,360.72 and 8,553.78 is: 12,830.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.46 : 30,360.72 = 8,553.78 : x
  2. Step 2: Convert to fraction form
    20,240.46/30,360.72 = 8,553.78/x
  3. Step 3: Cross multiply
    20,240.46x = 30,360.72 × 8,553.78
  4. Step 4: Simplify right side
    20,240.46x = 259,698,919.52
  5. Step 5: Solve for x
    x = 259,698,919.52/20,240.46
  6. Step 6: Final answer
    x = 12,830.68

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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.