Home / 13,251.18-18,286.31-7,201.25

Finding the Fourth Proportional to 13,251.18, 18,286.31 and 7,201.25

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Solution

The fourth proportional to 13,251.18, 18,286.31 and 7,201.25 is: 9,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.18 : 18,286.31 = 7,201.25 : x
  2. Step 2: Convert to fraction form
    13,251.18/18,286.31 = 7,201.25/x
  3. Step 3: Cross multiply
    13,251.18x = 18,286.31 × 7,201.25
  4. Step 4: Simplify right side
    13,251.18x = 131,684,198.46
  5. Step 5: Solve for x
    x = 131,684,198.46/13,251.18
  6. Step 6: Final answer
    x = 9,937.55

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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.