Home / 10,131.21-15,194.88-3,556.80

Finding the Fourth Proportional to 10,131.21, 15,194.88 and 3,556.80

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Solution

The fourth proportional to 10,131.21, 15,194.88 and 3,556.80 is: 5,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,131.21 : 15,194.88 = 3,556.80 : x
  2. Step 2: Convert to fraction form
    10,131.21/15,194.88 = 3,556.80/x
  3. Step 3: Cross multiply
    10,131.21x = 15,194.88 × 3,556.80
  4. Step 4: Simplify right side
    10,131.21x = 54,045,149.18
  5. Step 5: Solve for x
    x = 54,045,149.18/10,131.21
  6. Step 6: Final answer
    x = 5,334.52

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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.