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Finding the Fourth Proportional to 18,431.99, 27,647.02 and 5,951.78

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Solution

The fourth proportional to 18,431.99, 27,647.02 and 5,951.78 is: 8,927.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.99 : 27,647.02 = 5,951.78 : x
  2. Step 2: Convert to fraction form
    18,431.99/27,647.02 = 5,951.78/x
  3. Step 3: Cross multiply
    18,431.99x = 27,647.02 × 5,951.78
  4. Step 4: Simplify right side
    18,431.99x = 164,548,980.70
  5. Step 5: Solve for x
    x = 164,548,980.70/18,431.99
  6. Step 6: Final answer
    x = 8,927.36

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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.