Home / 28,919.67-39,904.89-16,986.85

Finding the Fourth Proportional to 28,919.67, 39,904.89 and 16,986.85

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Solution

The fourth proportional to 28,919.67, 39,904.89 and 16,986.85 is: 23,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919.67 : 39,904.89 = 16,986.85 : x
  2. Step 2: Convert to fraction form
    28,919.67/39,904.89 = 16,986.85/x
  3. Step 3: Cross multiply
    28,919.67x = 39,904.89 × 16,986.85
  4. Step 4: Simplify right side
    28,919.67x = 677,858,380.70
  5. Step 5: Solve for x
    x = 677,858,380.70/28,919.67
  6. Step 6: Final answer
    x = 23,439.35

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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.