Home / 10,412.44-15,620.28-3,390.80

Finding the Fourth Proportional to 10,412.44, 15,620.28 and 3,390.80

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Solution

The fourth proportional to 10,412.44, 15,620.28 and 3,390.80 is: 5,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,412.44 : 15,620.28 = 3,390.80 : x
  2. Step 2: Convert to fraction form
    10,412.44/15,620.28 = 3,390.80/x
  3. Step 3: Cross multiply
    10,412.44x = 15,620.28 × 3,390.80
  4. Step 4: Simplify right side
    10,412.44x = 52,965,173.68
  5. Step 5: Solve for x
    x = 52,965,173.68/10,412.44
  6. Step 6: Final answer
    x = 5,086.72

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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.