Home / 10,819.20-16,228.80-5,276.10

Finding the Fourth Proportional to 10,819.20, 16,228.80 and 5,276.10

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Solution

The fourth proportional to 10,819.20, 16,228.80 and 5,276.10 is: 7,914.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,819.20 : 16,228.80 = 5,276.10 : x
  2. Step 2: Convert to fraction form
    10,819.20/16,228.80 = 5,276.10/x
  3. Step 3: Cross multiply
    10,819.20x = 16,228.80 × 5,276.10
  4. Step 4: Simplify right side
    10,819.20x = 85,624,771.68
  5. Step 5: Solve for x
    x = 85,624,771.68/10,819.20
  6. Step 6: Final answer
    x = 7,914.15

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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.