Home / 28,919.60-43,357.80-15,786.80

Finding the Fourth Proportional to 28,919.60, 43,357.80 and 15,786.80

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Solution

The fourth proportional to 28,919.60, 43,357.80 and 15,786.80 is: 23,668.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.60 : 43,357.80 = 15,786.80 : x
  2. Step 2: Convert to fraction form
    28,919.60/43,357.80 = 15,786.80/x
  3. Step 3: Cross multiply
    28,919.60x = 43,357.80 × 15,786.80
  4. Step 4: Simplify right side
    28,919.60x = 684,480,917.04
  5. Step 5: Solve for x
    x = 684,480,917.04/28,919.60
  6. Step 6: Final answer
    x = 23,668.41

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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.