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Finding the Fourth Proportional to 18,570.99, 27,850.37 and 8,571.65

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Solution

The fourth proportional to 18,570.99, 27,850.37 and 8,571.65 is: 12,854.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,570.99 : 27,850.37 = 8,571.65 : x
  2. Step 2: Convert to fraction form
    18,570.99/27,850.37 = 8,571.65/x
  3. Step 3: Cross multiply
    18,570.99x = 27,850.37 × 8,571.65
  4. Step 4: Simplify right side
    18,570.99x = 238,723,441.90
  5. Step 5: Solve for x
    x = 238,723,441.90/18,570.99
  6. Step 6: Final answer
    x = 12,854.64

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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.