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Finding the Fourth Proportional to 18,004.98, 27,007.74 and 8,144.58

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Solution

The fourth proportional to 18,004.98, 27,007.74 and 8,144.58 is: 12,216.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,004.98 : 27,007.74 = 8,144.58 : x
  2. Step 2: Convert to fraction form
    18,004.98/27,007.74 = 8,144.58/x
  3. Step 3: Cross multiply
    18,004.98x = 27,007.74 × 8,144.58
  4. Step 4: Simplify right side
    18,004.98x = 219,966,699.05
  5. Step 5: Solve for x
    x = 219,966,699.05/18,004.98
  6. Step 6: Final answer
    x = 12,216.99

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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.