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Finding the Fourth Proportional to 18,453.60, 27,684.45 and 5,974.20

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Solution

The fourth proportional to 18,453.60, 27,684.45 and 5,974.20 is: 8,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,453.60 : 27,684.45 = 5,974.20 : x
  2. Step 2: Convert to fraction form
    18,453.60/27,684.45 = 5,974.20/x
  3. Step 3: Cross multiply
    18,453.60x = 27,684.45 × 5,974.20
  4. Step 4: Simplify right side
    18,453.60x = 165,392,441.19
  5. Step 5: Solve for x
    x = 165,392,441.19/18,453.60
  6. Step 6: Final answer
    x = 8,962.61

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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.