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Finding the Fourth Proportional to 17,787.89, 26,680.05 and 4,640.29

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Solution

The fourth proportional to 17,787.89, 26,680.05 and 4,640.29 is: 6,959.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,787.89 : 26,680.05 = 4,640.29 : x
  2. Step 2: Convert to fraction form
    17,787.89/26,680.05 = 4,640.29/x
  3. Step 3: Cross multiply
    17,787.89x = 26,680.05 × 4,640.29
  4. Step 4: Simplify right side
    17,787.89x = 123,803,102.51
  5. Step 5: Solve for x
    x = 123,803,102.51/17,787.89
  6. Step 6: Final answer
    x = 6,959.96

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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.