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Finding the Fourth Proportional to 9,939.60, 14,896.44 and 4,089.60

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Solution

The fourth proportional to 9,939.60, 14,896.44 and 4,089.60 is: 6,129.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,939.60 : 14,896.44 = 4,089.60 : x
  2. Step 2: Convert to fraction form
    9,939.60/14,896.44 = 4,089.60/x
  3. Step 3: Cross multiply
    9,939.60x = 14,896.44 × 4,089.60
  4. Step 4: Simplify right side
    9,939.60x = 60,920,481.02
  5. Step 5: Solve for x
    x = 60,920,481.02/9,939.60
  6. Step 6: Final answer
    x = 6,129.07

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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.