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Finding the Fourth Proportional to 18,189.23, 27,283.84 and 8,321.60

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Solution

The fourth proportional to 18,189.23, 27,283.84 and 8,321.60 is: 12,482.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,189.23 : 27,283.84 = 8,321.60 : x
  2. Step 2: Convert to fraction form
    18,189.23/27,283.84 = 8,321.60/x
  3. Step 3: Cross multiply
    18,189.23x = 27,283.84 × 8,321.60
  4. Step 4: Simplify right side
    18,189.23x = 227,045,250.35
  5. Step 5: Solve for x
    x = 227,045,250.35/18,189.23
  6. Step 6: Final answer
    x = 12,482.40

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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.