Home / 13,251.09-18,286.12-7,282.75

Finding the Fourth Proportional to 13,251.09, 18,286.12 and 7,282.75

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Solution

The fourth proportional to 13,251.09, 18,286.12 and 7,282.75 is: 10,049.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.09 : 18,286.12 = 7,282.75 : x
  2. Step 2: Convert to fraction form
    13,251.09/18,286.12 = 7,282.75/x
  3. Step 3: Cross multiply
    13,251.09x = 18,286.12 × 7,282.75
  4. Step 4: Simplify right side
    13,251.09x = 133,173,240.43
  5. Step 5: Solve for x
    x = 133,173,240.43/13,251.09
  6. Step 6: Final answer
    x = 10,049.98

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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.