Home / 20,378.22-30,560.94-7,897.38

Finding the Fourth Proportional to 20,378.22, 30,560.94 and 7,897.38

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Solution

The fourth proportional to 20,378.22, 30,560.94 and 7,897.38 is: 11,843.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.22 : 30,560.94 = 7,897.38 : x
  2. Step 2: Convert to fraction form
    20,378.22/30,560.94 = 7,897.38/x
  3. Step 3: Cross multiply
    20,378.22x = 30,560.94 × 7,897.38
  4. Step 4: Simplify right side
    20,378.22x = 241,351,356.34
  5. Step 5: Solve for x
    x = 241,351,356.34/20,378.22
  6. Step 6: Final answer
    x = 11,843.59

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1.5x scale

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.