Home / 10,115.58-15,173.64-2,720.82

Finding the Fourth Proportional to 10,115.58, 15,173.64 and 2,720.82

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Solution

The fourth proportional to 10,115.58, 15,173.64 and 2,720.82 is: 4,081.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.58 : 15,173.64 = 2,720.82 : x
  2. Step 2: Convert to fraction form
    10,115.58/15,173.64 = 2,720.82/x
  3. Step 3: Cross multiply
    10,115.58x = 15,173.64 × 2,720.82
  4. Step 4: Simplify right side
    10,115.58x = 41,284,743.18
  5. Step 5: Solve for x
    x = 41,284,743.18/10,115.58
  6. Step 6: Final answer
    x = 4,081.30

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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.