Home / 13,819.19-20,730.83-4,456.13

Finding the Fourth Proportional to 13,819.19, 20,730.83 and 4,456.13

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Solution

The fourth proportional to 13,819.19, 20,730.83 and 4,456.13 is: 6,684.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,819.19 : 20,730.83 = 4,456.13 : x
  2. Step 2: Convert to fraction form
    13,819.19/20,730.83 = 4,456.13/x
  3. Step 3: Cross multiply
    13,819.19x = 20,730.83 × 4,456.13
  4. Step 4: Simplify right side
    13,819.19x = 92,379,147.55
  5. Step 5: Solve for x
    x = 92,379,147.55/13,819.19
  6. Step 6: Final answer
    x = 6,684.85

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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.