Home / 11,143.78-16,706.45-5,217.62

Finding the Fourth Proportional to 11,143.78, 16,706.45 and 5,217.62

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Solution

The fourth proportional to 11,143.78, 16,706.45 and 5,217.62 is: 7,822.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.78 : 16,706.45 = 5,217.62 : x
  2. Step 2: Convert to fraction form
    11,143.78/16,706.45 = 5,217.62/x
  3. Step 3: Cross multiply
    11,143.78x = 16,706.45 × 5,217.62
  4. Step 4: Simplify right side
    11,143.78x = 87,167,837.16
  5. Step 5: Solve for x
    x = 87,167,837.16/11,143.78
  6. Step 6: Final answer
    x = 7,822.11

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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.