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Finding the Fourth Proportional to 20,072.67, 30,163.47 and 10,719.19

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Solution

The fourth proportional to 20,072.67, 30,163.47 and 10,719.19 is: 16,107.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.67 : 30,163.47 = 10,719.19 : x
  2. Step 2: Convert to fraction form
    20,072.67/30,163.47 = 10,719.19/x
  3. Step 3: Cross multiply
    20,072.67x = 30,163.47 × 10,719.19
  4. Step 4: Simplify right side
    20,072.67x = 323,327,965.99
  5. Step 5: Solve for x
    x = 323,327,965.99/20,072.67
  6. Step 6: Final answer
    x = 16,107.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.