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Finding the Fourth Proportional to 17,915.34, 26,824.41 and 12,361.98

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Solution

The fourth proportional to 17,915.34, 26,824.41 and 12,361.98 is: 18,509.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.34 : 26,824.41 = 12,361.98 : x
  2. Step 2: Convert to fraction form
    17,915.34/26,824.41 = 12,361.98/x
  3. Step 3: Cross multiply
    17,915.34x = 26,824.41 × 12,361.98
  4. Step 4: Simplify right side
    17,915.34x = 331,602,819.93
  5. Step 5: Solve for x
    x = 331,602,819.93/17,915.34
  6. Step 6: Final answer
    x = 18,509.43

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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.