Home / 20,452.35-30,696.53-12,121.95

Finding the Fourth Proportional to 20,452.35, 30,696.53 and 12,121.95

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Solution

The fourth proportional to 20,452.35, 30,696.53 and 12,121.95 is: 18,193.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,452.35 : 30,696.53 = 12,121.95 : x
  2. Step 2: Convert to fraction form
    20,452.35/30,696.53 = 12,121.95/x
  3. Step 3: Cross multiply
    20,452.35x = 30,696.53 × 12,121.95
  4. Step 4: Simplify right side
    20,452.35x = 372,101,741.22
  5. Step 5: Solve for x
    x = 372,101,741.22/20,452.35
  6. Step 6: Final answer
    x = 18,193.59

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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.