Home / 21,104.36-31,661.22-7,956.85

Finding the Fourth Proportional to 21,104.36, 31,661.22 and 7,956.85

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Solution

The fourth proportional to 21,104.36, 31,661.22 and 7,956.85 is: 11,937.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.36 : 31,661.22 = 7,956.85 : x
  2. Step 2: Convert to fraction form
    21,104.36/31,661.22 = 7,956.85/x
  3. Step 3: Cross multiply
    21,104.36x = 31,661.22 × 7,956.85
  4. Step 4: Simplify right side
    21,104.36x = 251,923,578.36
  5. Step 5: Solve for x
    x = 251,923,578.36/21,104.36
  6. Step 6: Final answer
    x = 11,937.04

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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.