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Finding the Fourth Proportional to 11,238.88, 16,850 and 5,389.92

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Solution

The fourth proportional to 11,238.88, 16,850 and 5,389.92 is: 8,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,238.88 : 16,850 = 5,389.92 : x
  2. Step 2: Convert to fraction form
    11,238.88/16,850 = 5,389.92/x
  3. Step 3: Cross multiply
    11,238.88x = 16,850 × 5,389.92
  4. Step 4: Simplify right side
    11,238.88x = 90,820,152
  5. Step 5: Solve for x
    x = 90,820,152/11,238.88
  6. Step 6: Final answer
    x = 8,080.89

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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.