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Finding the Fourth Proportional to 17,787.70, 26,681.60 and 4,640.09

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Solution

The fourth proportional to 17,787.70, 26,681.60 and 4,640.09 is: 6,960.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,787.70 : 26,681.60 = 4,640.09 : x
  2. Step 2: Convert to fraction form
    17,787.70/26,681.60 = 4,640.09/x
  3. Step 3: Cross multiply
    17,787.70x = 26,681.60 × 4,640.09
  4. Step 4: Simplify right side
    17,787.70x = 123,804,903.54
  5. Step 5: Solve for x
    x = 123,804,903.54/17,787.70
  6. Step 6: Final answer
    x = 6,960.14

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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.