Home / 28,942.14-39,928.31-18,866.89

Finding the Fourth Proportional to 28,942.14, 39,928.31 and 18,866.89

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Solution

The fourth proportional to 28,942.14, 39,928.31 and 18,866.89 is: 26,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,942.14 : 39,928.31 = 18,866.89 : x
  2. Step 2: Convert to fraction form
    28,942.14/39,928.31 = 18,866.89/x
  3. Step 3: Cross multiply
    28,942.14x = 39,928.31 × 18,866.89
  4. Step 4: Simplify right side
    28,942.14x = 753,322,833.01
  5. Step 5: Solve for x
    x = 753,322,833.01/28,942.14
  6. Step 6: Final answer
    x = 26,028.58

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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.