Home / 9,128.75-13,716.21-8,759.69

Finding the Fourth Proportional to 9,128.75, 13,716.21 and 8,759.69

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Solution

The fourth proportional to 9,128.75, 13,716.21 and 8,759.69 is: 13,161.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.75 : 13,716.21 = 8,759.69 : x
  2. Step 2: Convert to fraction form
    9,128.75/13,716.21 = 8,759.69/x
  3. Step 3: Cross multiply
    9,128.75x = 13,716.21 × 8,759.69
  4. Step 4: Simplify right side
    9,128.75x = 120,149,747.57
  5. Step 5: Solve for x
    x = 120,149,747.57/9,128.75
  6. Step 6: Final answer
    x = 13,161.69

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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.