Home / 20,131.13-30,205.22-10,768.69

Finding the Fourth Proportional to 20,131.13, 30,205.22 and 10,768.69

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Solution

The fourth proportional to 20,131.13, 30,205.22 and 10,768.69 is: 16,157.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.13 : 30,205.22 = 10,768.69 : x
  2. Step 2: Convert to fraction form
    20,131.13/30,205.22 = 10,768.69/x
  3. Step 3: Cross multiply
    20,131.13x = 30,205.22 × 10,768.69
  4. Step 4: Simplify right side
    20,131.13x = 325,270,521.21
  5. Step 5: Solve for x
    x = 325,270,521.21/20,131.13
  6. Step 6: Final answer
    x = 16,157.59

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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.