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Finding the Fourth Proportional to 18,213.80, 27,320.70 and 16,464.20

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Solution

The fourth proportional to 18,213.80, 27,320.70 and 16,464.20 is: 24,696.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.80 : 27,320.70 = 16,464.20 : x
  2. Step 2: Convert to fraction form
    18,213.80/27,320.70 = 16,464.20/x
  3. Step 3: Cross multiply
    18,213.80x = 27,320.70 × 16,464.20
  4. Step 4: Simplify right side
    18,213.80x = 449,813,468.94
  5. Step 5: Solve for x
    x = 449,813,468.94/18,213.80
  6. Step 6: Final answer
    x = 24,696.30

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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.