Home / 8,736.44-13,121.40-7,489.85

Finding the Fourth Proportional to 8,736.44, 13,121.40 and 7,489.85

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Solution

The fourth proportional to 8,736.44, 13,121.40 and 7,489.85 is: 11,249.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736.44 : 13,121.40 = 7,489.85 : x
  2. Step 2: Convert to fraction form
    8,736.44/13,121.40 = 7,489.85/x
  3. Step 3: Cross multiply
    8,736.44x = 13,121.40 × 7,489.85
  4. Step 4: Simplify right side
    8,736.44x = 98,277,317.79
  5. Step 5: Solve for x
    x = 98,277,317.79/8,736.44
  6. Step 6: Final answer
    x = 11,249.13

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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.