Home / 11,449.31-17,149.45-8,645.09

Finding the Fourth Proportional to 11,449.31, 17,149.45 and 8,645.09

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Solution

The fourth proportional to 11,449.31, 17,149.45 and 8,645.09 is: 12,949.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,449.31 : 17,149.45 = 8,645.09 : x
  2. Step 2: Convert to fraction form
    11,449.31/17,149.45 = 8,645.09/x
  3. Step 3: Cross multiply
    11,449.31x = 17,149.45 × 8,645.09
  4. Step 4: Simplify right side
    11,449.31x = 148,258,538.70
  5. Step 5: Solve for x
    x = 148,258,538.70/11,449.31
  6. Step 6: Final answer
    x = 12,949.12

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1.5x scale

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.