Home / 11,879.41-16,391.87-6,574.21

Finding the Fourth Proportional to 11,879.41, 16,391.87 and 6,574.21

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Solution

The fourth proportional to 11,879.41, 16,391.87 and 6,574.21 is: 9,071.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.41 : 16,391.87 = 6,574.21 : x
  2. Step 2: Convert to fraction form
    11,879.41/16,391.87 = 6,574.21/x
  3. Step 3: Cross multiply
    11,879.41x = 16,391.87 × 6,574.21
  4. Step 4: Simplify right side
    11,879.41x = 107,763,638.68
  5. Step 5: Solve for x
    x = 107,763,638.68/11,879.41
  6. Step 6: Final answer
    x = 9,071.46

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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.