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Finding the Fourth Proportional to 19,208, 28,812 and 8,264

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Solution

The fourth proportional to 19,208, 28,812 and 8,264 is: 12,396

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,208 : 28,812 = 8,264 : x
  2. Step 2: Convert to fraction form
    19,208/28,812 = 8,264/x
  3. Step 3: Cross multiply
    19,208x = 28,812 × 8,264
  4. Step 4: Simplify right side
    19,208x = 238,102,368
  5. Step 5: Solve for x
    x = 238,102,368/19,208
  6. Step 6: Final answer
    x = 12,396

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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.