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Finding the Fourth Proportional to 13,049.31, 18,007.97 and 7,080.86

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Solution

The fourth proportional to 13,049.31, 18,007.97 and 7,080.86 is: 9,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,049.31 : 18,007.97 = 7,080.86 : x
  2. Step 2: Convert to fraction form
    13,049.31/18,007.97 = 7,080.86/x
  3. Step 3: Cross multiply
    13,049.31x = 18,007.97 × 7,080.86
  4. Step 4: Simplify right side
    13,049.31x = 127,511,789.01
  5. Step 5: Solve for x
    x = 127,511,789.01/13,049.31
  6. Step 6: Final answer
    x = 9,771.53

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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.