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Finding the Fourth Proportional to 20,276.53, 30,414.79 and 12,468.94

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Solution

The fourth proportional to 20,276.53, 30,414.79 and 12,468.94 is: 18,703.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.53 : 30,414.79 = 12,468.94 : x
  2. Step 2: Convert to fraction form
    20,276.53/30,414.79 = 12,468.94/x
  3. Step 3: Cross multiply
    20,276.53x = 30,414.79 × 12,468.94
  4. Step 4: Simplify right side
    20,276.53x = 379,240,131.17
  5. Step 5: Solve for x
    x = 379,240,131.17/20,276.53
  6. Step 6: Final answer
    x = 18,703.41

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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.