Home / 26,112.60-39,104.10-20,928.60

Finding the Fourth Proportional to 26,112.60, 39,104.10 and 20,928.60

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Solution

The fourth proportional to 26,112.60, 39,104.10 and 20,928.60 is: 31,340.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,112.60 : 39,104.10 = 20,928.60 : x
  2. Step 2: Convert to fraction form
    26,112.60/39,104.10 = 20,928.60/x
  3. Step 3: Cross multiply
    26,112.60x = 39,104.10 × 20,928.60
  4. Step 4: Simplify right side
    26,112.60x = 818,394,067.26
  5. Step 5: Solve for x
    x = 818,394,067.26/26,112.60
  6. Step 6: Final answer
    x = 31,340.96

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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.