Home / 13,841.52-20,771.94-5,520.78

Finding the Fourth Proportional to 13,841.52, 20,771.94 and 5,520.78

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Solution

The fourth proportional to 13,841.52, 20,771.94 and 5,520.78 is: 8,285.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,841.52 : 20,771.94 = 5,520.78 : x
  2. Step 2: Convert to fraction form
    13,841.52/20,771.94 = 5,520.78/x
  3. Step 3: Cross multiply
    13,841.52x = 20,771.94 × 5,520.78
  4. Step 4: Simplify right side
    13,841.52x = 114,677,310.91
  5. Step 5: Solve for x
    x = 114,677,310.91/13,841.52
  6. Step 6: Final answer
    x = 8,285.02

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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.