Home / 11,817.09-17,728.70-4,422.12

Finding the Fourth Proportional to 11,817.09, 17,728.70 and 4,422.12

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Solution

The fourth proportional to 11,817.09, 17,728.70 and 4,422.12 is: 6,634.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,817.09 : 17,728.70 = 4,422.12 : x
  2. Step 2: Convert to fraction form
    11,817.09/17,728.70 = 4,422.12/x
  3. Step 3: Cross multiply
    11,817.09x = 17,728.70 × 4,422.12
  4. Step 4: Simplify right side
    11,817.09x = 78,398,438.84
  5. Step 5: Solve for x
    x = 78,398,438.84/11,817.09
  6. Step 6: Final answer
    x = 6,634.33

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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.