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Finding the Fourth Proportional to 34,893.97, 48,153.80 and 18,978.44

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Solution

The fourth proportional to 34,893.97, 48,153.80 and 18,978.44 is: 26,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,893.97 : 48,153.80 = 18,978.44 : x
  2. Step 2: Convert to fraction form
    34,893.97/48,153.80 = 18,978.44/x
  3. Step 3: Cross multiply
    34,893.97x = 48,153.80 × 18,978.44
  4. Step 4: Simplify right side
    34,893.97x = 913,883,810.75
  5. Step 5: Solve for x
    x = 913,883,810.75/34,893.97
  6. Step 6: Final answer
    x = 26,190.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.