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Finding the Fourth Proportional to 10,819.80, 16,229.70 and 9,480.60

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Solution

The fourth proportional to 10,819.80, 16,229.70 and 9,480.60 is: 14,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,819.80 : 16,229.70 = 9,480.60 : x
  2. Step 2: Convert to fraction form
    10,819.80/16,229.70 = 9,480.60/x
  3. Step 3: Cross multiply
    10,819.80x = 16,229.70 × 9,480.60
  4. Step 4: Simplify right side
    10,819.80x = 153,867,293.82
  5. Step 5: Solve for x
    x = 153,867,293.82/10,819.80
  6. Step 6: Final answer
    x = 14,220.90

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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.