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Finding the Fourth Proportional to 11,440.62, 17,078.07 and 9,890.60

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Solution

The fourth proportional to 11,440.62, 17,078.07 and 9,890.60 is: 14,764.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,440.62 : 17,078.07 = 9,890.60 : x
  2. Step 2: Convert to fraction form
    11,440.62/17,078.07 = 9,890.60/x
  3. Step 3: Cross multiply
    11,440.62x = 17,078.07 × 9,890.60
  4. Step 4: Simplify right side
    11,440.62x = 168,912,273.75
  5. Step 5: Solve for x
    x = 168,912,273.75/11,440.62
  6. Step 6: Final answer
    x = 14,764.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.