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Finding the Fourth Proportional to 21,611.73, 32,422.19 and 6,824.91

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Solution

The fourth proportional to 21,611.73, 32,422.19 and 6,824.91 is: 10,238.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.73 : 32,422.19 = 6,824.91 : x
  2. Step 2: Convert to fraction form
    21,611.73/32,422.19 = 6,824.91/x
  3. Step 3: Cross multiply
    21,611.73x = 32,422.19 × 6,824.91
  4. Step 4: Simplify right side
    21,611.73x = 221,278,494.63
  5. Step 5: Solve for x
    x = 221,278,494.63/21,611.73
  6. Step 6: Final answer
    x = 10,238.81

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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.