Home / 11,212.80-16,819.20-5,366.40

Finding the Fourth Proportional to 11,212.80, 16,819.20 and 5,366.40

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Solution

The fourth proportional to 11,212.80, 16,819.20 and 5,366.40 is: 8,049.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.80 : 16,819.20 = 5,366.40 : x
  2. Step 2: Convert to fraction form
    11,212.80/16,819.20 = 5,366.40/x
  3. Step 3: Cross multiply
    11,212.80x = 16,819.20 × 5,366.40
  4. Step 4: Simplify right side
    11,212.80x = 90,258,554.88
  5. Step 5: Solve for x
    x = 90,258,554.88/11,212.80
  6. Step 6: Final answer
    x = 8,049.60

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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.