Home / 13,321.36-18,383.61-7,352.90

Finding the Fourth Proportional to 13,321.36, 18,383.61 and 7,352.90

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Solution

The fourth proportional to 13,321.36, 18,383.61 and 7,352.90 is: 10,147.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.36 : 18,383.61 = 7,352.90 : x
  2. Step 2: Convert to fraction form
    13,321.36/18,383.61 = 7,352.90/x
  3. Step 3: Cross multiply
    13,321.36x = 18,383.61 × 7,352.90
  4. Step 4: Simplify right side
    13,321.36x = 135,172,845.97
  5. Step 5: Solve for x
    x = 135,172,845.97/13,321.36
  6. Step 6: Final answer
    x = 10,147.08

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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.