Home / 28,629.80-42,944.70-12,008.60

Finding the Fourth Proportional to 28,629.80, 42,944.70 and 12,008.60

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Solution

The fourth proportional to 28,629.80, 42,944.70 and 12,008.60 is: 18,012.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,629.80 : 42,944.70 = 12,008.60 : x
  2. Step 2: Convert to fraction form
    28,629.80/42,944.70 = 12,008.60/x
  3. Step 3: Cross multiply
    28,629.80x = 42,944.70 × 12,008.60
  4. Step 4: Simplify right side
    28,629.80x = 515,705,724.42
  5. Step 5: Solve for x
    x = 515,705,724.42/28,629.80
  6. Step 6: Final answer
    x = 18,012.90

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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.