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Finding the Fourth Proportional to 18,404.40, 27,606.60 and 12,183.60

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Solution

The fourth proportional to 18,404.40, 27,606.60 and 12,183.60 is: 18,275.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,404.40 : 27,606.60 = 12,183.60 : x
  2. Step 2: Convert to fraction form
    18,404.40/27,606.60 = 12,183.60/x
  3. Step 3: Cross multiply
    18,404.40x = 27,606.60 × 12,183.60
  4. Step 4: Simplify right side
    18,404.40x = 336,347,771.76
  5. Step 5: Solve for x
    x = 336,347,771.76/18,404.40
  6. Step 6: Final answer
    x = 18,275.40

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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.