Home / 28,912.10-43,369.35-9,190.10

Finding the Fourth Proportional to 28,912.10, 43,369.35 and 9,190.10

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Solution

The fourth proportional to 28,912.10, 43,369.35 and 9,190.10 is: 13,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,912.10 : 43,369.35 = 9,190.10 : x
  2. Step 2: Convert to fraction form
    28,912.10/43,369.35 = 9,190.10/x
  3. Step 3: Cross multiply
    28,912.10x = 43,369.35 × 9,190.10
  4. Step 4: Simplify right side
    28,912.10x = 398,568,663.44
  5. Step 5: Solve for x
    x = 398,568,663.44/28,912.10
  6. Step 6: Final answer
    x = 13,785.53

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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.