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Finding the Fourth Proportional to 13,321.44, 19,999.44 and 8,724.96

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Solution

The fourth proportional to 13,321.44, 19,999.44 and 8,724.96 is: 13,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.44 : 19,999.44 = 8,724.96 : x
  2. Step 2: Convert to fraction form
    13,321.44/19,999.44 = 8,724.96/x
  3. Step 3: Cross multiply
    13,321.44x = 19,999.44 × 8,724.96
  4. Step 4: Simplify right side
    13,321.44x = 174,494,314.02
  5. Step 5: Solve for x
    x = 174,494,314.02/13,321.44
  6. Step 6: Final answer
    x = 13,098.76

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1.5x scale

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.