Home / 28,851.62-39,821.87-16,918.80

Finding the Fourth Proportional to 28,851.62, 39,821.87 and 16,918.80

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Solution

The fourth proportional to 28,851.62, 39,821.87 and 16,918.80 is: 23,351.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,851.62 : 39,821.87 = 16,918.80 : x
  2. Step 2: Convert to fraction form
    28,851.62/39,821.87 = 16,918.80/x
  3. Step 3: Cross multiply
    28,851.62x = 39,821.87 × 16,918.80
  4. Step 4: Simplify right side
    28,851.62x = 673,738,163.22
  5. Step 5: Solve for x
    x = 673,738,163.22/28,851.62
  6. Step 6: Final answer
    x = 23,351.83

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1.5x scale

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.