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Finding the Fourth Proportional to 18,219.30, 27,316.80 and 8,863.80

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Solution

The fourth proportional to 18,219.30, 27,316.80 and 8,863.80 is: 13,289.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.30 : 27,316.80 = 8,863.80 : x
  2. Step 2: Convert to fraction form
    18,219.30/27,316.80 = 8,863.80/x
  3. Step 3: Cross multiply
    18,219.30x = 27,316.80 × 8,863.80
  4. Step 4: Simplify right side
    18,219.30x = 242,130,651.84
  5. Step 5: Solve for x
    x = 242,130,651.84/18,219.30
  6. Step 6: Final answer
    x = 13,289.79

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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.