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Finding the Fourth Proportional to 15,093.37, 20,830.08 and 8,379.64

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Solution

The fourth proportional to 15,093.37, 20,830.08 and 8,379.64 is: 11,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,093.37 : 20,830.08 = 8,379.64 : x
  2. Step 2: Convert to fraction form
    15,093.37/20,830.08 = 8,379.64/x
  3. Step 3: Cross multiply
    15,093.37x = 20,830.08 × 8,379.64
  4. Step 4: Simplify right side
    15,093.37x = 174,548,571.57
  5. Step 5: Solve for x
    x = 174,548,571.57/15,093.37
  6. Step 6: Final answer
    x = 11,564.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.