Home / 19,556.78-29,330.64-11,661.50

Finding the Fourth Proportional to 19,556.78, 29,330.64 and 11,661.50

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Solution

The fourth proportional to 19,556.78, 29,330.64 and 11,661.50 is: 17,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,556.78 : 29,330.64 = 11,661.50 : x
  2. Step 2: Convert to fraction form
    19,556.78/29,330.64 = 11,661.50/x
  3. Step 3: Cross multiply
    19,556.78x = 29,330.64 × 11,661.50
  4. Step 4: Simplify right side
    19,556.78x = 342,039,331.69
  5. Step 5: Solve for x
    x = 342,039,331.69/19,556.78
  6. Step 6: Final answer
    x = 17,489.56

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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.