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Finding the Fourth Proportional to 19,936.95, 29,900.03 and 10,081.95

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Solution

The fourth proportional to 19,936.95, 29,900.03 and 10,081.95 is: 15,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,936.95 : 29,900.03 = 10,081.95 : x
  2. Step 2: Convert to fraction form
    19,936.95/29,900.03 = 10,081.95/x
  3. Step 3: Cross multiply
    19,936.95x = 29,900.03 × 10,081.95
  4. Step 4: Simplify right side
    19,936.95x = 301,450,557.05
  5. Step 5: Solve for x
    x = 301,450,557.05/19,936.95
  6. Step 6: Final answer
    x = 15,120.19

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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.