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Finding the Fourth Proportional to 20,246.44, 30,369.66 and 10,379.43

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Solution

The fourth proportional to 20,246.44, 30,369.66 and 10,379.43 is: 15,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.44 : 30,369.66 = 10,379.43 : x
  2. Step 2: Convert to fraction form
    20,246.44/30,369.66 = 10,379.43/x
  3. Step 3: Cross multiply
    20,246.44x = 30,369.66 × 10,379.43
  4. Step 4: Simplify right side
    20,246.44x = 315,219,760.09
  5. Step 5: Solve for x
    x = 315,219,760.09/20,246.44
  6. Step 6: Final answer
    x = 15,569.15

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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.