Home / 21,830.21-32,696.56-18,982.55

Finding the Fourth Proportional to 21,830.21, 32,696.56 and 18,982.55

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Solution

The fourth proportional to 21,830.21, 32,696.56 and 18,982.55 is: 28,431.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,830.21 : 32,696.56 = 18,982.55 : x
  2. Step 2: Convert to fraction form
    21,830.21/32,696.56 = 18,982.55/x
  3. Step 3: Cross multiply
    21,830.21x = 32,696.56 × 18,982.55
  4. Step 4: Simplify right side
    21,830.21x = 620,664,190.50
  5. Step 5: Solve for x
    x = 620,664,190.50/21,830.21
  6. Step 6: Final answer
    x = 28,431.44

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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.