Home / 12,999.44-19,469.96-9,121.12

Finding the Fourth Proportional to 12,999.44, 19,469.96 and 9,121.12

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Solution

The fourth proportional to 12,999.44, 19,469.96 and 9,121.12 is: 13,661.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.44 : 19,469.96 = 9,121.12 : x
  2. Step 2: Convert to fraction form
    12,999.44/19,469.96 = 9,121.12/x
  3. Step 3: Cross multiply
    12,999.44x = 19,469.96 × 9,121.12
  4. Step 4: Simplify right side
    12,999.44x = 177,587,841.56
  5. Step 5: Solve for x
    x = 177,587,841.56/12,999.44
  6. Step 6: Final answer
    x = 13,661.19

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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.