Home / 28,879.70-43,319.55-9,159.80

Finding the Fourth Proportional to 28,879.70, 43,319.55 and 9,159.80

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Solution

The fourth proportional to 28,879.70, 43,319.55 and 9,159.80 is: 13,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,879.70 : 43,319.55 = 9,159.80 : x
  2. Step 2: Convert to fraction form
    28,879.70/43,319.55 = 9,159.80/x
  3. Step 3: Cross multiply
    28,879.70x = 43,319.55 × 9,159.80
  4. Step 4: Simplify right side
    28,879.70x = 396,798,414.09
  5. Step 5: Solve for x
    x = 396,798,414.09/28,879.70
  6. Step 6: Final answer
    x = 13,739.70

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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.