Home / 21,189.42-29,241.42-11,629.44

Finding the Fourth Proportional to 21,189.42, 29,241.42 and 11,629.44

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Solution

The fourth proportional to 21,189.42, 29,241.42 and 11,629.44 is: 16,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.42 : 29,241.42 = 11,629.44 : x
  2. Step 2: Convert to fraction form
    21,189.42/29,241.42 = 11,629.44/x
  3. Step 3: Cross multiply
    21,189.42x = 29,241.42 × 11,629.44
  4. Step 4: Simplify right side
    21,189.42x = 340,061,339.40
  5. Step 5: Solve for x
    x = 340,061,339.40/21,189.42
  6. Step 6: Final answer
    x = 16,048.64

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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.