Home / 28,879.20-43,318.80-19,029.60

Finding the Fourth Proportional to 28,879.20, 43,318.80 and 19,029.60

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Solution

The fourth proportional to 28,879.20, 43,318.80 and 19,029.60 is: 28,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.20 : 43,318.80 = 19,029.60 : x
  2. Step 2: Convert to fraction form
    28,879.20/43,318.80 = 19,029.60/x
  3. Step 3: Cross multiply
    28,879.20x = 43,318.80 × 19,029.60
  4. Step 4: Simplify right side
    28,879.20x = 824,339,436.48
  5. Step 5: Solve for x
    x = 824,339,436.48/28,879.20
  6. Step 6: Final answer
    x = 28,544.40

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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.