Home / 21,611.97-29,824.83-12,180.51

Finding the Fourth Proportional to 21,611.97, 29,824.83 and 12,180.51

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Solution

The fourth proportional to 21,611.97, 29,824.83 and 12,180.51 is: 16,809.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.97 : 29,824.83 = 12,180.51 : x
  2. Step 2: Convert to fraction form
    21,611.97/29,824.83 = 12,180.51/x
  3. Step 3: Cross multiply
    21,611.97x = 29,824.83 × 12,180.51
  4. Step 4: Simplify right side
    21,611.97x = 363,281,640.06
  5. Step 5: Solve for x
    x = 363,281,640.06/21,611.97
  6. Step 6: Final answer
    x = 16,809.28

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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.