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Finding the Fourth Proportional to 13,436.10, 20,110.95 and 7,180.44

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Solution

The fourth proportional to 13,436.10, 20,110.95 and 7,180.44 is: 10,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,436.10 : 20,110.95 = 7,180.44 : x
  2. Step 2: Convert to fraction form
    13,436.10/20,110.95 = 7,180.44/x
  3. Step 3: Cross multiply
    13,436.10x = 20,110.95 × 7,180.44
  4. Step 4: Simplify right side
    13,436.10x = 144,405,469.82
  5. Step 5: Solve for x
    x = 144,405,469.82/13,436.10
  6. Step 6: Final answer
    x = 10,747.57

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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.