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Finding the Fourth Proportional to 18,293.28, 27,441.60 and 8,435.28

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Solution

The fourth proportional to 18,293.28, 27,441.60 and 8,435.28 is: 12,653.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.28 : 27,441.60 = 8,435.28 : x
  2. Step 2: Convert to fraction form
    18,293.28/27,441.60 = 8,435.28/x
  3. Step 3: Cross multiply
    18,293.28x = 27,441.60 × 8,435.28
  4. Step 4: Simplify right side
    18,293.28x = 231,477,579.65
  5. Step 5: Solve for x
    x = 231,477,579.65/18,293.28
  6. Step 6: Final answer
    x = 12,653.69

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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.