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Finding the Fourth Proportional to 16,781.86, 25,190.26 and 16,405.34

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Solution

The fourth proportional to 16,781.86, 25,190.26 and 16,405.34 is: 24,625.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,781.86 : 25,190.26 = 16,405.34 : x
  2. Step 2: Convert to fraction form
    16,781.86/25,190.26 = 16,405.34/x
  3. Step 3: Cross multiply
    16,781.86x = 25,190.26 × 16,405.34
  4. Step 4: Simplify right side
    16,781.86x = 413,254,779.99
  5. Step 5: Solve for x
    x = 413,254,779.99/16,781.86
  6. Step 6: Final answer
    x = 24,625.09

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.