Home / 28,209.83-38,919.15-16,879.59

Finding the Fourth Proportional to 28,209.83, 38,919.15 and 16,879.59

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Solution

The fourth proportional to 28,209.83, 38,919.15 and 16,879.59 is: 23,287.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,209.83 : 38,919.15 = 16,879.59 : x
  2. Step 2: Convert to fraction form
    28,209.83/38,919.15 = 16,879.59/x
  3. Step 3: Cross multiply
    28,209.83x = 38,919.15 × 16,879.59
  4. Step 4: Simplify right side
    28,209.83x = 656,939,295.15
  5. Step 5: Solve for x
    x = 656,939,295.15/28,209.83
  6. Step 6: Final answer
    x = 23,287.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.