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Finding the Fourth Proportional to 18,175.10, 27,274.80 and 8,309.30

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Solution

The fourth proportional to 18,175.10, 27,274.80 and 8,309.30 is: 12,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,175.10 : 27,274.80 = 8,309.30 : x
  2. Step 2: Convert to fraction form
    18,175.10/27,274.80 = 8,309.30/x
  3. Step 3: Cross multiply
    18,175.10x = 27,274.80 × 8,309.30
  4. Step 4: Simplify right side
    18,175.10x = 226,634,495.64
  5. Step 5: Solve for x
    x = 226,634,495.64/18,175.10
  6. Step 6: Final answer
    x = 12,469.50

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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.