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Finding the Fourth Proportional to 11,608.78, 17,398.04 and 4,679.50

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Solution

The fourth proportional to 11,608.78, 17,398.04 and 4,679.50 is: 7,013.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,608.78 : 17,398.04 = 4,679.50 : x
  2. Step 2: Convert to fraction form
    11,608.78/17,398.04 = 4,679.50/x
  3. Step 3: Cross multiply
    11,608.78x = 17,398.04 × 4,679.50
  4. Step 4: Simplify right side
    11,608.78x = 81,414,128.18
  5. Step 5: Solve for x
    x = 81,414,128.18/11,608.78
  6. Step 6: Final answer
    x = 7,013.15

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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.