Home / 28,745.86-39,668.84-16,170.60

Finding the Fourth Proportional to 28,745.86, 39,668.84 and 16,170.60

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Solution

The fourth proportional to 28,745.86, 39,668.84 and 16,170.60 is: 22,315.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.86 : 39,668.84 = 16,170.60 : x
  2. Step 2: Convert to fraction form
    28,745.86/39,668.84 = 16,170.60/x
  3. Step 3: Cross multiply
    28,745.86x = 39,668.84 × 16,170.60
  4. Step 4: Simplify right side
    28,745.86x = 641,468,944.10
  5. Step 5: Solve for x
    x = 641,468,944.10/28,745.86
  6. Step 6: Final answer
    x = 22,315.18

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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.