Home / 13,321.29-18,383.85-7,352.82

Finding the Fourth Proportional to 13,321.29, 18,383.85 and 7,352.82

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Solution

The fourth proportional to 13,321.29, 18,383.85 and 7,352.82 is: 10,147.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,321.29 : 18,383.85 = 7,352.82 : x
  2. Step 2: Convert to fraction form
    13,321.29/18,383.85 = 7,352.82/x
  3. Step 3: Cross multiply
    13,321.29x = 18,383.85 × 7,352.82
  4. Step 4: Simplify right side
    13,321.29x = 135,173,139.96
  5. Step 5: Solve for x
    x = 135,173,139.96/13,321.29
  6. Step 6: Final answer
    x = 10,147.15

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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.