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Finding the Fourth Proportional to 13,348.98, 18,419.98 and 7,379.83

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Solution

The fourth proportional to 13,348.98, 18,419.98 and 7,379.83 is: 10,183.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,348.98 : 18,419.98 = 7,379.83 : x
  2. Step 2: Convert to fraction form
    13,348.98/18,419.98 = 7,379.83/x
  3. Step 3: Cross multiply
    13,348.98x = 18,419.98 × 7,379.83
  4. Step 4: Simplify right side
    13,348.98x = 135,936,380.84
  5. Step 5: Solve for x
    x = 135,936,380.84/13,348.98
  6. Step 6: Final answer
    x = 10,183.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.