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Finding the Fourth Proportional to 18,649.56, 27,974.16 and 8,783.44

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Solution

The fourth proportional to 18,649.56, 27,974.16 and 8,783.44 is: 13,175.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.56 : 27,974.16 = 8,783.44 : x
  2. Step 2: Convert to fraction form
    18,649.56/27,974.16 = 8,783.44/x
  3. Step 3: Cross multiply
    18,649.56x = 27,974.16 × 8,783.44
  4. Step 4: Simplify right side
    18,649.56x = 245,709,355.91
  5. Step 5: Solve for x
    x = 245,709,355.91/18,649.56
  6. Step 6: Final answer
    x = 13,175.08

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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.