Home / 28,198.90-38,911.77-16,866.10

Finding the Fourth Proportional to 28,198.90, 38,911.77 and 16,866.10

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Solution

The fourth proportional to 28,198.90, 38,911.77 and 16,866.10 is: 23,273.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.90 : 38,911.77 = 16,866.10 : x
  2. Step 2: Convert to fraction form
    28,198.90/38,911.77 = 16,866.10/x
  3. Step 3: Cross multiply
    28,198.90x = 38,911.77 × 16,866.10
  4. Step 4: Simplify right side
    28,198.90x = 656,289,804.00
  5. Step 5: Solve for x
    x = 656,289,804.00/28,198.90
  6. Step 6: Final answer
    x = 23,273.60

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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.