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Finding the Fourth Proportional to 21,892.50, 30,217.05 and 12,466.62

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Solution

The fourth proportional to 21,892.50, 30,217.05 and 12,466.62 is: 17,207.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,892.50 : 30,217.05 = 12,466.62 : x
  2. Step 2: Convert to fraction form
    21,892.50/30,217.05 = 12,466.62/x
  3. Step 3: Cross multiply
    21,892.50x = 30,217.05 × 12,466.62
  4. Step 4: Simplify right side
    21,892.50x = 376,704,479.87
  5. Step 5: Solve for x
    x = 376,704,479.87/21,892.50
  6. Step 6: Final answer
    x = 17,207.01

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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.