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Finding the Fourth Proportional to 18,196.80, 27,244.80 and 16,818.72

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Solution

The fourth proportional to 18,196.80, 27,244.80 and 16,818.72 is: 25,181.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,196.80 : 27,244.80 = 16,818.72 : x
  2. Step 2: Convert to fraction form
    18,196.80/27,244.80 = 16,818.72/x
  3. Step 3: Cross multiply
    18,196.80x = 27,244.80 × 16,818.72
  4. Step 4: Simplify right side
    18,196.80x = 458,222,662.66
  5. Step 5: Solve for x
    x = 458,222,662.66/18,196.80
  6. Step 6: Final answer
    x = 25,181.50

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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.