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Finding the Fourth Proportional to 11,679.21, 17,518.82 and 2,914.13

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Solution

The fourth proportional to 11,679.21, 17,518.82 and 2,914.13 is: 4,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,679.21 : 17,518.82 = 2,914.13 : x
  2. Step 2: Convert to fraction form
    11,679.21/17,518.82 = 2,914.13/x
  3. Step 3: Cross multiply
    11,679.21x = 17,518.82 × 2,914.13
  4. Step 4: Simplify right side
    11,679.21x = 51,052,118.93
  5. Step 5: Solve for x
    x = 51,052,118.93/11,679.21
  6. Step 6: Final answer
    x = 4,371.20

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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.