Home / 21,286.42-29,364.11-16,241.90

Finding the Fourth Proportional to 21,286.42, 29,364.11 and 16,241.90

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Solution

The fourth proportional to 21,286.42, 29,364.11 and 16,241.90 is: 22,405.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.42 : 29,364.11 = 16,241.90 : x
  2. Step 2: Convert to fraction form
    21,286.42/29,364.11 = 16,241.90/x
  3. Step 3: Cross multiply
    21,286.42x = 29,364.11 × 16,241.90
  4. Step 4: Simplify right side
    21,286.42x = 476,928,710.18
  5. Step 5: Solve for x
    x = 476,928,710.18/21,286.42
  6. Step 6: Final answer
    x = 22,405.31

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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.