Home / 27,653.78-38,163.12-15,556.36

Finding the Fourth Proportional to 27,653.78, 38,163.12 and 15,556.36

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Solution

The fourth proportional to 27,653.78, 38,163.12 and 15,556.36 is: 21,468.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.78 : 38,163.12 = 15,556.36 : x
  2. Step 2: Convert to fraction form
    27,653.78/38,163.12 = 15,556.36/x
  3. Step 3: Cross multiply
    27,653.78x = 38,163.12 × 15,556.36
  4. Step 4: Simplify right side
    27,653.78x = 593,679,233.44
  5. Step 5: Solve for x
    x = 593,679,233.44/27,653.78
  6. Step 6: Final answer
    x = 21,468.29

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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.