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Finding the Fourth Proportional to 20,369.95, 30,568.49 and 8,371.94

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Solution

The fourth proportional to 20,369.95, 30,568.49 and 8,371.94 is: 12,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,369.95 : 30,568.49 = 8,371.94 : x
  2. Step 2: Convert to fraction form
    20,369.95/30,568.49 = 8,371.94/x
  3. Step 3: Cross multiply
    20,369.95x = 30,568.49 × 8,371.94
  4. Step 4: Simplify right side
    20,369.95x = 255,917,690.00
  5. Step 5: Solve for x
    x = 255,917,690.00/20,369.95
  6. Step 6: Final answer
    x = 12,563.49

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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.