Home / 20,556.68-30,654.52-20,369.57

Finding the Fourth Proportional to 20,556.68, 30,654.52 and 20,369.57

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Solution

The fourth proportional to 20,556.68, 30,654.52 and 20,369.57 is: 30,375.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.68 : 30,654.52 = 20,369.57 : x
  2. Step 2: Convert to fraction form
    20,556.68/30,654.52 = 20,369.57/x
  3. Step 3: Cross multiply
    20,556.68x = 30,654.52 × 20,369.57
  4. Step 4: Simplify right side
    20,556.68x = 624,419,390.96
  5. Step 5: Solve for x
    x = 624,419,390.96/20,556.68
  6. Step 6: Final answer
    x = 30,375.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.