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Finding the Fourth Proportional to 19,278, 28,917 and 6,966

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Solution

The fourth proportional to 19,278, 28,917 and 6,966 is: 10,449

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278 : 28,917 = 6,966 : x
  2. Step 2: Convert to fraction form
    19,278/28,917 = 6,966/x
  3. Step 3: Cross multiply
    19,278x = 28,917 × 6,966
  4. Step 4: Simplify right side
    19,278x = 201,435,822
  5. Step 5: Solve for x
    x = 201,435,822/19,278
  6. Step 6: Final answer
    x = 10,449

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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.