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Finding the Fourth Proportional to 29,914.60, 44,915.10 and 21,188.20

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Solution

The fourth proportional to 29,914.60, 44,915.10 and 21,188.20 is: 31,812.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,914.60 : 44,915.10 = 21,188.20 : x
  2. Step 2: Convert to fraction form
    29,914.60/44,915.10 = 21,188.20/x
  3. Step 3: Cross multiply
    29,914.60x = 44,915.10 × 21,188.20
  4. Step 4: Simplify right side
    29,914.60x = 951,670,121.82
  5. Step 5: Solve for x
    x = 951,670,121.82/29,914.60
  6. Step 6: Final answer
    x = 31,812.90

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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.