Home / 18,231.55-25,149.93-12,556.46

Finding the Fourth Proportional to 18,231.55, 25,149.93 and 12,556.46

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Solution

The fourth proportional to 18,231.55, 25,149.93 and 12,556.46 is: 17,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,231.55 : 25,149.93 = 12,556.46 : x
  2. Step 2: Convert to fraction form
    18,231.55/25,149.93 = 12,556.46/x
  3. Step 3: Cross multiply
    18,231.55x = 25,149.93 × 12,556.46
  4. Step 4: Simplify right side
    18,231.55x = 315,794,090.05
  5. Step 5: Solve for x
    x = 315,794,090.05/18,231.55
  6. Step 6: Final answer
    x = 17,321.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.