Home / 21,336.92-29,450.22-12,960.44

Finding the Fourth Proportional to 21,336.92, 29,450.22 and 12,960.44

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Solution

The fourth proportional to 21,336.92, 29,450.22 and 12,960.44 is: 17,888.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,336.92 : 29,450.22 = 12,960.44 : x
  2. Step 2: Convert to fraction form
    21,336.92/29,450.22 = 12,960.44/x
  3. Step 3: Cross multiply
    21,336.92x = 29,450.22 × 12,960.44
  4. Step 4: Simplify right side
    21,336.92x = 381,687,809.30
  5. Step 5: Solve for x
    x = 381,687,809.30/21,336.92
  6. Step 6: Final answer
    x = 17,888.61

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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.