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Finding the Fourth Proportional to 15,163.98, 20,922.75 and 8,874.06

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Solution

The fourth proportional to 15,163.98, 20,922.75 and 8,874.06 is: 12,244.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.98 : 20,922.75 = 8,874.06 : x
  2. Step 2: Convert to fraction form
    15,163.98/20,922.75 = 8,874.06/x
  3. Step 3: Cross multiply
    15,163.98x = 20,922.75 × 8,874.06
  4. Step 4: Simplify right side
    15,163.98x = 185,669,738.87
  5. Step 5: Solve for x
    x = 185,669,738.87/15,163.98
  6. Step 6: Final answer
    x = 12,244.13

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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.