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Finding the Fourth Proportional to 11,190, 16,772.88 and 5,336.16

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Solution

The fourth proportional to 11,190, 16,772.88 and 5,336.16 is: 7,998.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,190 : 16,772.88 = 5,336.16 : x
  2. Step 2: Convert to fraction form
    11,190/16,772.88 = 5,336.16/x
  3. Step 3: Cross multiply
    11,190x = 16,772.88 × 5,336.16
  4. Step 4: Simplify right side
    11,190x = 89,502,771.34
  5. Step 5: Solve for x
    x = 89,502,771.34/11,190
  6. Step 6: Final answer
    x = 7,998.46

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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.