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Finding the Fourth Proportional to 18,883.64, 28,323.60 and 5,736.12

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Solution

The fourth proportional to 18,883.64, 28,323.60 and 5,736.12 is: 8,603.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.64 : 28,323.60 = 5,736.12 : x
  2. Step 2: Convert to fraction form
    18,883.64/28,323.60 = 5,736.12/x
  3. Step 3: Cross multiply
    18,883.64x = 28,323.60 × 5,736.12
  4. Step 4: Simplify right side
    18,883.64x = 162,467,568.43
  5. Step 5: Solve for x
    x = 162,467,568.43/18,883.64
  6. Step 6: Final answer
    x = 8,603.62

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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.