Home / 26,103.06-39,121.79-18,721.94

Finding the Fourth Proportional to 26,103.06, 39,121.79 and 18,721.94

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Solution

The fourth proportional to 26,103.06, 39,121.79 and 18,721.94 is: 28,059.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,103.06 : 39,121.79 = 18,721.94 : x
  2. Step 2: Convert to fraction form
    26,103.06/39,121.79 = 18,721.94/x
  3. Step 3: Cross multiply
    26,103.06x = 39,121.79 × 18,721.94
  4. Step 4: Simplify right side
    26,103.06x = 732,435,515.85
  5. Step 5: Solve for x
    x = 732,435,515.85/26,103.06
  6. Step 6: Final answer
    x = 28,059.37

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1.5x scale

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.