Home / 21,029.80-31,492.74-13,611.44

Finding the Fourth Proportional to 21,029.80, 31,492.74 and 13,611.44

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Solution

The fourth proportional to 21,029.80, 31,492.74 and 13,611.44 is: 20,383.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,029.80 : 31,492.74 = 13,611.44 : x
  2. Step 2: Convert to fraction form
    21,029.80/31,492.74 = 13,611.44/x
  3. Step 3: Cross multiply
    21,029.80x = 31,492.74 × 13,611.44
  4. Step 4: Simplify right side
    21,029.80x = 428,661,540.95
  5. Step 5: Solve for x
    x = 428,661,540.95/21,029.80
  6. Step 6: Final answer
    x = 20,383.53

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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.