Home / 21,241.22-29,269.69-16,431.96

Finding the Fourth Proportional to 21,241.22, 29,269.69 and 16,431.96

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Solution

The fourth proportional to 21,241.22, 29,269.69 and 16,431.96 is: 22,642.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,241.22 : 29,269.69 = 16,431.96 : x
  2. Step 2: Convert to fraction form
    21,241.22/29,269.69 = 16,431.96/x
  3. Step 3: Cross multiply
    21,241.22x = 29,269.69 × 16,431.96
  4. Step 4: Simplify right side
    21,241.22x = 480,958,375.29
  5. Step 5: Solve for x
    x = 480,958,375.29/21,241.22
  6. Step 6: Final answer
    x = 22,642.69

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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.