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Finding the Fourth Proportional to 21,611.70, 29,824.16 and 12,052.44

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Solution

The fourth proportional to 21,611.70, 29,824.16 and 12,052.44 is: 16,632.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,611.70 : 29,824.16 = 12,052.44 : x
  2. Step 2: Convert to fraction form
    21,611.70/29,824.16 = 12,052.44/x
  3. Step 3: Cross multiply
    21,611.70x = 29,824.16 × 12,052.44
  4. Step 4: Simplify right side
    21,611.70x = 359,453,838.69
  5. Step 5: Solve for x
    x = 359,453,838.69/21,611.70
  6. Step 6: Final answer
    x = 16,632.37

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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.