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Finding the Fourth Proportional to 19,993.11, 29,964.47 and 10,134.87

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Solution

The fourth proportional to 19,993.11, 29,964.47 and 10,134.87 is: 15,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,993.11 : 29,964.47 = 10,134.87 : x
  2. Step 2: Convert to fraction form
    19,993.11/29,964.47 = 10,134.87/x
  3. Step 3: Cross multiply
    19,993.11x = 29,964.47 × 10,134.87
  4. Step 4: Simplify right side
    19,993.11x = 303,685,957.39
  5. Step 5: Solve for x
    x = 303,685,957.39/19,993.11
  6. Step 6: Final answer
    x = 15,189.53

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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.