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Finding the Fourth Proportional to 13,082, 18,049.20 and 7,415.84

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Solution

The fourth proportional to 13,082, 18,049.20 and 7,415.84 is: 10,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,082 : 18,049.20 = 7,415.84 : x
  2. Step 2: Convert to fraction form
    13,082/18,049.20 = 7,415.84/x
  3. Step 3: Cross multiply
    13,082x = 18,049.20 × 7,415.84
  4. Step 4: Simplify right side
    13,082x = 133,849,979.33
  5. Step 5: Solve for x
    x = 133,849,979.33/13,082
  6. Step 6: Final answer
    x = 10,231.61

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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.