Home / 19,556.88-29,330.78-11,661.60

Finding the Fourth Proportional to 19,556.88, 29,330.78 and 11,661.60

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Solution

The fourth proportional to 19,556.88, 29,330.78 and 11,661.60 is: 17,489.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,556.88 : 29,330.78 = 11,661.60 : x
  2. Step 2: Convert to fraction form
    19,556.88/29,330.78 = 11,661.60/x
  3. Step 3: Cross multiply
    19,556.88x = 29,330.78 × 11,661.60
  4. Step 4: Simplify right side
    19,556.88x = 342,043,824.05
  5. Step 5: Solve for x
    x = 342,043,824.05/19,556.88
  6. Step 6: Final answer
    x = 17,489.69

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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.