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Finding the Fourth Proportional to 20,299.14, 30,440.91 and 6,969.65

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Solution

The fourth proportional to 20,299.14, 30,440.91 and 6,969.65 is: 10,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.14 : 30,440.91 = 6,969.65 : x
  2. Step 2: Convert to fraction form
    20,299.14/30,440.91 = 6,969.65/x
  3. Step 3: Cross multiply
    20,299.14x = 30,440.91 × 6,969.65
  4. Step 4: Simplify right side
    20,299.14x = 212,162,336.18
  5. Step 5: Solve for x
    x = 212,162,336.18/20,299.14
  6. Step 6: Final answer
    x = 10,451.79

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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.