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Finding the Fourth Proportional to 13,305.87, 18,361.69 and 7,337.39

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Solution

The fourth proportional to 13,305.87, 18,361.69 and 7,337.39 is: 10,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,305.87 : 18,361.69 = 7,337.39 : x
  2. Step 2: Convert to fraction form
    13,305.87/18,361.69 = 7,337.39/x
  3. Step 3: Cross multiply
    13,305.87x = 18,361.69 × 7,337.39
  4. Step 4: Simplify right side
    13,305.87x = 134,726,770.44
  5. Step 5: Solve for x
    x = 134,726,770.44/13,305.87
  6. Step 6: Final answer
    x = 10,125.36

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Half scale
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Double scale
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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.