Home / 11,905.14-16,406.44-8,719.41

Finding the Fourth Proportional to 11,905.14, 16,406.44 and 8,719.41

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Solution

The fourth proportional to 11,905.14, 16,406.44 and 8,719.41 is: 12,016.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,905.14 : 16,406.44 = 8,719.41 : x
  2. Step 2: Convert to fraction form
    11,905.14/16,406.44 = 8,719.41/x
  3. Step 3: Cross multiply
    11,905.14x = 16,406.44 × 8,719.41
  4. Step 4: Simplify right side
    11,905.14x = 143,054,455.20
  5. Step 5: Solve for x
    x = 143,054,455.20/11,905.14
  6. Step 6: Final answer
    x = 12,016.19

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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.