Home / 28,268.70-39,013.92-16,170.30

Finding the Fourth Proportional to 28,268.70, 39,013.92 and 16,170.30

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Solution

The fourth proportional to 28,268.70, 39,013.92 and 16,170.30 is: 22,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.70 : 39,013.92 = 16,170.30 : x
  2. Step 2: Convert to fraction form
    28,268.70/39,013.92 = 16,170.30/x
  3. Step 3: Cross multiply
    28,268.70x = 39,013.92 × 16,170.30
  4. Step 4: Simplify right side
    28,268.70x = 630,866,790.58
  5. Step 5: Solve for x
    x = 630,866,790.58/28,268.70
  6. Step 6: Final answer
    x = 22,316.80

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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.