Home / 12,584.07-17,367.69-8,120.81

Finding the Fourth Proportional to 12,584.07, 17,367.69 and 8,120.81

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Solution

The fourth proportional to 12,584.07, 17,367.69 and 8,120.81 is: 11,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,584.07 : 17,367.69 = 8,120.81 : x
  2. Step 2: Convert to fraction form
    12,584.07/17,367.69 = 8,120.81/x
  3. Step 3: Cross multiply
    12,584.07x = 17,367.69 × 8,120.81
  4. Step 4: Simplify right side
    12,584.07x = 141,039,754.05
  5. Step 5: Solve for x
    x = 141,039,754.05/12,584.07
  6. Step 6: Final answer
    x = 11,207.80

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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.