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Finding the Fourth Proportional to 13,480.67, 18,601.97 and 7,817.25

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Solution

The fourth proportional to 13,480.67, 18,601.97 and 7,817.25 is: 10,787.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,480.67 : 18,601.97 = 7,817.25 : x
  2. Step 2: Convert to fraction form
    13,480.67/18,601.97 = 7,817.25/x
  3. Step 3: Cross multiply
    13,480.67x = 18,601.97 × 7,817.25
  4. Step 4: Simplify right side
    13,480.67x = 145,416,249.98
  5. Step 5: Solve for x
    x = 145,416,249.98/13,480.67
  6. Step 6: Final answer
    x = 10,787.02

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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.