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Finding the Fourth Proportional to 20,059.65, 30,107.97 and 10,206

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Solution

The fourth proportional to 20,059.65, 30,107.97 and 10,206 is: 15,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,059.65 : 30,107.97 = 10,206 : x
  2. Step 2: Convert to fraction form
    20,059.65/30,107.97 = 10,206/x
  3. Step 3: Cross multiply
    20,059.65x = 30,107.97 × 10,206
  4. Step 4: Simplify right side
    20,059.65x = 307,281,941.82
  5. Step 5: Solve for x
    x = 307,281,941.82/20,059.65
  6. Step 6: Final answer
    x = 15,318.41

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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.