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Finding the Fourth Proportional to 18,103.61, 27,146.98 and 6,861.08

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Solution

The fourth proportional to 18,103.61, 27,146.98 and 6,861.08 is: 10,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.61 : 27,146.98 = 6,861.08 : x
  2. Step 2: Convert to fraction form
    18,103.61/27,146.98 = 6,861.08/x
  3. Step 3: Cross multiply
    18,103.61x = 27,146.98 × 6,861.08
  4. Step 4: Simplify right side
    18,103.61x = 186,257,601.54
  5. Step 5: Solve for x
    x = 186,257,601.54/18,103.61
  6. Step 6: Final answer
    x = 10,288.42

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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.