Home / 11,149.75-15,387.14-6,672.64

Finding the Fourth Proportional to 11,149.75, 15,387.14 and 6,672.64

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Solution

The fourth proportional to 11,149.75, 15,387.14 and 6,672.64 is: 9,208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,149.75 : 15,387.14 = 6,672.64 : x
  2. Step 2: Convert to fraction form
    11,149.75/15,387.14 = 6,672.64/x
  3. Step 3: Cross multiply
    11,149.75x = 15,387.14 × 6,672.64
  4. Step 4: Simplify right side
    11,149.75x = 102,672,845.85
  5. Step 5: Solve for x
    x = 102,672,845.85/11,149.75
  6. Step 6: Final answer
    x = 9,208.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.