Home / 28,906.06-43,359.90-9,185.80

Finding the Fourth Proportional to 28,906.06, 43,359.90 and 9,185.80

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Solution

The fourth proportional to 28,906.06, 43,359.90 and 9,185.80 is: 13,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,906.06 : 43,359.90 = 9,185.80 : x
  2. Step 2: Convert to fraction form
    28,906.06/43,359.90 = 9,185.80/x
  3. Step 3: Cross multiply
    28,906.06x = 43,359.90 × 9,185.80
  4. Step 4: Simplify right side
    28,906.06x = 398,295,369.42
  5. Step 5: Solve for x
    x = 398,295,369.42/28,906.06
  6. Step 6: Final answer
    x = 13,778.96

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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.