Home / 10,115.56-15,170.37-3,540.52

Finding the Fourth Proportional to 10,115.56, 15,170.37 and 3,540.52

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Solution

The fourth proportional to 10,115.56, 15,170.37 and 3,540.52 is: 5,309.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.56 : 15,170.37 = 3,540.52 : x
  2. Step 2: Convert to fraction form
    10,115.56/15,170.37 = 3,540.52/x
  3. Step 3: Cross multiply
    10,115.56x = 15,170.37 × 3,540.52
  4. Step 4: Simplify right side
    10,115.56x = 53,710,998.39
  5. Step 5: Solve for x
    x = 53,710,998.39/10,115.56
  6. Step 6: Final answer
    x = 5,309.74

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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.