Home / 13,556.36-20,311.26-12,186.80

Finding the Fourth Proportional to 13,556.36, 20,311.26 and 12,186.80

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Solution

The fourth proportional to 13,556.36, 20,311.26 and 12,186.80 is: 18,259.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,556.36 : 20,311.26 = 12,186.80 : x
  2. Step 2: Convert to fraction form
    13,556.36/20,311.26 = 12,186.80/x
  3. Step 3: Cross multiply
    13,556.36x = 20,311.26 × 12,186.80
  4. Step 4: Simplify right side
    13,556.36x = 247,529,263.37
  5. Step 5: Solve for x
    x = 247,529,263.37/13,556.36
  6. Step 6: Final answer
    x = 18,259.27

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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.