Home / 28,745.20-39,668.32-16,169.95

Finding the Fourth Proportional to 28,745.20, 39,668.32 and 16,169.95

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Solution

The fourth proportional to 28,745.20, 39,668.32 and 16,169.95 is: 22,314.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.20 : 39,668.32 = 16,169.95 : x
  2. Step 2: Convert to fraction form
    28,745.20/39,668.32 = 16,169.95/x
  3. Step 3: Cross multiply
    28,745.20x = 39,668.32 × 16,169.95
  4. Step 4: Simplify right side
    28,745.20x = 641,434,750.98
  5. Step 5: Solve for x
    x = 641,434,750.98/28,745.20
  6. Step 6: Final answer
    x = 22,314.50

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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.