Home / 28,917.20-43,112.38-28,190.03

Finding the Fourth Proportional to 28,917.20, 43,112.38 and 28,190.03

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Solution

The fourth proportional to 28,917.20, 43,112.38 and 28,190.03 is: 42,028.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,917.20 : 43,112.38 = 28,190.03 : x
  2. Step 2: Convert to fraction form
    28,917.20/43,112.38 = 28,190.03/x
  3. Step 3: Cross multiply
    28,917.20x = 43,112.38 × 28,190.03
  4. Step 4: Simplify right side
    28,917.20x = 1,215,338,973.11
  5. Step 5: Solve for x
    x = 1,215,338,973.11/28,917.20
  6. Step 6: Final answer
    x = 42,028.23

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.