Home / 10,906.20-16,359.30-7,212.60

Finding the Fourth Proportional to 10,906.20, 16,359.30 and 7,212.60

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Solution

The fourth proportional to 10,906.20, 16,359.30 and 7,212.60 is: 10,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.20 : 16,359.30 = 7,212.60 : x
  2. Step 2: Convert to fraction form
    10,906.20/16,359.30 = 7,212.60/x
  3. Step 3: Cross multiply
    10,906.20x = 16,359.30 × 7,212.60
  4. Step 4: Simplify right side
    10,906.20x = 117,993,087.18
  5. Step 5: Solve for x
    x = 117,993,087.18/10,906.20
  6. Step 6: Final answer
    x = 10,818.90

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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.