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Finding the Fourth Proportional to 11,129.70, 16,698.60 and 4,560.60

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Solution

The fourth proportional to 11,129.70, 16,698.60 and 4,560.60 is: 6,842.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.70 : 16,698.60 = 4,560.60 : x
  2. Step 2: Convert to fraction form
    11,129.70/16,698.60 = 4,560.60/x
  3. Step 3: Cross multiply
    11,129.70x = 16,698.60 × 4,560.60
  4. Step 4: Simplify right side
    11,129.70x = 76,155,635.16
  5. Step 5: Solve for x
    x = 76,155,635.16/11,129.70
  6. Step 6: Final answer
    x = 6,842.56

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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.