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Finding the Fourth Proportional to 11,103, 16,666.36 and 4,781.01

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Solution

The fourth proportional to 11,103, 16,666.36 and 4,781.01 is: 7,176.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,103 : 16,666.36 = 4,781.01 : x
  2. Step 2: Convert to fraction form
    11,103/16,666.36 = 4,781.01/x
  3. Step 3: Cross multiply
    11,103x = 16,666.36 × 4,781.01
  4. Step 4: Simplify right side
    11,103x = 79,682,033.82
  5. Step 5: Solve for x
    x = 79,682,033.82/11,103
  6. Step 6: Final answer
    x = 7,176.62

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Why These Related Problems?

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