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Finding the Fourth Proportional to 11,879.30, 16,393.20 and 6,574.34

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Solution

The fourth proportional to 11,879.30, 16,393.20 and 6,574.34 is: 9,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,879.30 : 16,393.20 = 6,574.34 : x
  2. Step 2: Convert to fraction form
    11,879.30/16,393.20 = 6,574.34/x
  3. Step 3: Cross multiply
    11,879.30x = 16,393.20 × 6,574.34
  4. Step 4: Simplify right side
    11,879.30x = 107,774,470.49
  5. Step 5: Solve for x
    x = 107,774,470.49/11,879.30
  6. Step 6: Final answer
    x = 9,072.46

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.