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Finding the Fourth Proportional to 38,190.46, 57,289.56 and 13,230.46

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Solution

The fourth proportional to 38,190.46, 57,289.56 and 13,230.46 is: 19,847.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,190.46 : 57,289.56 = 13,230.46 : x
  2. Step 2: Convert to fraction form
    38,190.46/57,289.56 = 13,230.46/x
  3. Step 3: Cross multiply
    38,190.46x = 57,289.56 × 13,230.46
  4. Step 4: Simplify right side
    38,190.46x = 757,967,232.00
  5. Step 5: Solve for x
    x = 757,967,232.00/38,190.46
  6. Step 6: Final answer
    x = 19,847.03

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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.