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Finding the Fourth Proportional to 18,633.88, 27,943.44 and 8,238.36

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Solution

The fourth proportional to 18,633.88, 27,943.44 and 8,238.36 is: 12,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,633.88 : 27,943.44 = 8,238.36 : x
  2. Step 2: Convert to fraction form
    18,633.88/27,943.44 = 8,238.36/x
  3. Step 3: Cross multiply
    18,633.88x = 27,943.44 × 8,238.36
  4. Step 4: Simplify right side
    18,633.88x = 230,208,118.36
  5. Step 5: Solve for x
    x = 230,208,118.36/18,633.88
  6. Step 6: Final answer
    x = 12,354.28

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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.