Home / 13,383.38-18,469.22-7,415.15

Finding the Fourth Proportional to 13,383.38, 18,469.22 and 7,415.15

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Solution

The fourth proportional to 13,383.38, 18,469.22 and 7,415.15 is: 10,232.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.38 : 18,469.22 = 7,415.15 : x
  2. Step 2: Convert to fraction form
    13,383.38/18,469.22 = 7,415.15/x
  3. Step 3: Cross multiply
    13,383.38x = 18,469.22 × 7,415.15
  4. Step 4: Simplify right side
    13,383.38x = 136,951,907.26
  5. Step 5: Solve for x
    x = 136,951,907.26/13,383.38
  6. Step 6: Final answer
    x = 10,232.99

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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.