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Finding the Fourth Proportional to 20,599.68, 30,872.47 and 11,719.08

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Solution

The fourth proportional to 20,599.68, 30,872.47 and 11,719.08 is: 17,563.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,599.68 : 30,872.47 = 11,719.08 : x
  2. Step 2: Convert to fraction form
    20,599.68/30,872.47 = 11,719.08/x
  3. Step 3: Cross multiply
    20,599.68x = 30,872.47 × 11,719.08
  4. Step 4: Simplify right side
    20,599.68x = 361,796,945.73
  5. Step 5: Solve for x
    x = 361,796,945.73/20,599.68
  6. Step 6: Final answer
    x = 17,563.23

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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.