Home / 10,115.38-15,173.06-3,189.88

Finding the Fourth Proportional to 10,115.38, 15,173.06 and 3,189.88

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Solution

The fourth proportional to 10,115.38, 15,173.06 and 3,189.88 is: 4,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.38 : 15,173.06 = 3,189.88 : x
  2. Step 2: Convert to fraction form
    10,115.38/15,173.06 = 3,189.88/x
  3. Step 3: Cross multiply
    10,115.38x = 15,173.06 × 3,189.88
  4. Step 4: Simplify right side
    10,115.38x = 48,400,240.63
  5. Step 5: Solve for x
    x = 48,400,240.63/10,115.38
  6. Step 6: Final answer
    x = 4,784.82

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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.