Home / 28,912.60-43,370.10-9,190.60

Finding the Fourth Proportional to 28,912.60, 43,370.10 and 9,190.60

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Solution

The fourth proportional to 28,912.60, 43,370.10 and 9,190.60 is: 13,786.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.60 : 43,370.10 = 9,190.60 : x
  2. Step 2: Convert to fraction form
    28,912.60/43,370.10 = 9,190.60/x
  3. Step 3: Cross multiply
    28,912.60x = 43,370.10 × 9,190.60
  4. Step 4: Simplify right side
    28,912.60x = 398,597,241.06
  5. Step 5: Solve for x
    x = 398,597,241.06/28,912.60
  6. Step 6: Final answer
    x = 13,786.28

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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.