Home / 20,081.28-30,121.11-9,556.41

Finding the Fourth Proportional to 20,081.28, 30,121.11 and 9,556.41

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Solution

The fourth proportional to 20,081.28, 30,121.11 and 9,556.41 is: 14,334.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.28 : 30,121.11 = 9,556.41 : x
  2. Step 2: Convert to fraction form
    20,081.28/30,121.11 = 9,556.41/x
  3. Step 3: Cross multiply
    20,081.28x = 30,121.11 × 9,556.41
  4. Step 4: Simplify right side
    20,081.28x = 287,849,676.82
  5. Step 5: Solve for x
    x = 287,849,676.82/20,081.28
  6. Step 6: Final answer
    x = 14,334.23

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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.