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Finding the Fourth Proportional to 11,321.90, 16,950 and 6,925.94

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Solution

The fourth proportional to 11,321.90, 16,950 and 6,925.94 is: 10,368.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.90 : 16,950 = 6,925.94 : x
  2. Step 2: Convert to fraction form
    11,321.90/16,950 = 6,925.94/x
  3. Step 3: Cross multiply
    11,321.90x = 16,950 × 6,925.94
  4. Step 4: Simplify right side
    11,321.90x = 117,394,683
  5. Step 5: Solve for x
    x = 117,394,683/11,321.90
  6. Step 6: Final answer
    x = 10,368.81

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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.