Home / 21,611.75-29,824.22-12,180.65

Finding the Fourth Proportional to 21,611.75, 29,824.22 and 12,180.65

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Solution

The fourth proportional to 21,611.75, 29,824.22 and 12,180.65 is: 16,809.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.75 : 29,824.22 = 12,180.65 : x
  2. Step 2: Convert to fraction form
    21,611.75/29,824.22 = 12,180.65/x
  3. Step 3: Cross multiply
    21,611.75x = 29,824.22 × 12,180.65
  4. Step 4: Simplify right side
    21,611.75x = 363,278,385.34
  5. Step 5: Solve for x
    x = 363,278,385.34/21,611.75
  6. Step 6: Final answer
    x = 16,809.30

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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.