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Finding the Fourth Proportional to 16,826.40, 25,239.60 and 11,296.80

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Solution

The fourth proportional to 16,826.40, 25,239.60 and 11,296.80 is: 16,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,826.40 : 25,239.60 = 11,296.80 : x
  2. Step 2: Convert to fraction form
    16,826.40/25,239.60 = 11,296.80/x
  3. Step 3: Cross multiply
    16,826.40x = 25,239.60 × 11,296.80
  4. Step 4: Simplify right side
    16,826.40x = 285,126,713.28
  5. Step 5: Solve for x
    x = 285,126,713.28/16,826.40
  6. Step 6: Final answer
    x = 16,945.20

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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.