Home / 17,787.29-26,680.32-8,431.79

Finding the Fourth Proportional to 17,787.29, 26,680.32 and 8,431.79

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Solution

The fourth proportional to 17,787.29, 26,680.32 and 8,431.79 is: 12,647.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,787.29 : 26,680.32 = 8,431.79 : x
  2. Step 2: Convert to fraction form
    17,787.29/26,680.32 = 8,431.79/x
  3. Step 3: Cross multiply
    17,787.29x = 26,680.32 × 8,431.79
  4. Step 4: Simplify right side
    17,787.29x = 224,962,721.97
  5. Step 5: Solve for x
    x = 224,962,721.97/17,787.29
  6. Step 6: Final answer
    x = 12,647.39

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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.