Home / 12,879.56-19,312.24-3,992.43

Finding the Fourth Proportional to 12,879.56, 19,312.24 and 3,992.43

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Solution

The fourth proportional to 12,879.56, 19,312.24 and 3,992.43 is: 5,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,879.56 : 19,312.24 = 3,992.43 : x
  2. Step 2: Convert to fraction form
    12,879.56/19,312.24 = 3,992.43/x
  3. Step 3: Cross multiply
    12,879.56x = 19,312.24 × 3,992.43
  4. Step 4: Simplify right side
    12,879.56x = 77,102,756.36
  5. Step 5: Solve for x
    x = 77,102,756.36/12,879.56
  6. Step 6: Final answer
    x = 5,986.44

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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.