Home / 28,620.99-42,857.60-19,763.64

Finding the Fourth Proportional to 28,620.99, 42,857.60 and 19,763.64

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Solution

The fourth proportional to 28,620.99, 42,857.60 and 19,763.64 is: 29,594.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.99 : 42,857.60 = 19,763.64 : x
  2. Step 2: Convert to fraction form
    28,620.99/42,857.60 = 19,763.64/x
  3. Step 3: Cross multiply
    28,620.99x = 42,857.60 × 19,763.64
  4. Step 4: Simplify right side
    28,620.99x = 847,022,078.85
  5. Step 5: Solve for x
    x = 847,022,078.85/28,620.99
  6. Step 6: Final answer
    x = 29,594.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.