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Finding the Fourth Proportional to 20,468.46, 30,710.21 and 8,625.22

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Solution

The fourth proportional to 20,468.46, 30,710.21 and 8,625.22 is: 12,940.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,468.46 : 30,710.21 = 8,625.22 : x
  2. Step 2: Convert to fraction form
    20,468.46/30,710.21 = 8,625.22/x
  3. Step 3: Cross multiply
    20,468.46x = 30,710.21 × 8,625.22
  4. Step 4: Simplify right side
    20,468.46x = 264,882,197.59
  5. Step 5: Solve for x
    x = 264,882,197.59/20,468.46
  6. Step 6: Final answer
    x = 12,940.99

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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.