Home / 21,251.94-31,850.07-8,757.42

Finding the Fourth Proportional to 21,251.94, 31,850.07 and 8,757.42

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Solution

The fourth proportional to 21,251.94, 31,850.07 and 8,757.42 is: 13,124.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,251.94 : 31,850.07 = 8,757.42 : x
  2. Step 2: Convert to fraction form
    21,251.94/31,850.07 = 8,757.42/x
  3. Step 3: Cross multiply
    21,251.94x = 31,850.07 × 8,757.42
  4. Step 4: Simplify right side
    21,251.94x = 278,924,440.02
  5. Step 5: Solve for x
    x = 278,924,440.02/21,251.94
  6. Step 6: Final answer
    x = 13,124.66

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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.