Home / 10,286.12-15,431.45-3,170.41

Finding the Fourth Proportional to 10,286.12, 15,431.45 and 3,170.41

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Solution

The fourth proportional to 10,286.12, 15,431.45 and 3,170.41 is: 4,756.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,286.12 : 15,431.45 = 3,170.41 : x
  2. Step 2: Convert to fraction form
    10,286.12/15,431.45 = 3,170.41/x
  3. Step 3: Cross multiply
    10,286.12x = 15,431.45 × 3,170.41
  4. Step 4: Simplify right side
    10,286.12x = 48,923,968.96
  5. Step 5: Solve for x
    x = 48,923,968.96/10,286.12
  6. Step 6: Final answer
    x = 4,756.31

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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.