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Finding the Fourth Proportional to 34,893.92, 48,153.26 and 18,978.50

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Solution

The fourth proportional to 34,893.92, 48,153.26 and 18,978.50 is: 26,190.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,893.92 : 48,153.26 = 18,978.50 : x
  2. Step 2: Convert to fraction form
    34,893.92/48,153.26 = 18,978.50/x
  3. Step 3: Cross multiply
    34,893.92x = 48,153.26 × 18,978.50
  4. Step 4: Simplify right side
    34,893.92x = 913,876,644.91
  5. Step 5: Solve for x
    x = 913,876,644.91/34,893.92
  6. Step 6: Final answer
    x = 26,190.14

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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.