Home / 28,134.37-38,824-15,556.69

Finding the Fourth Proportional to 28,134.37, 38,824 and 15,556.69

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Solution

The fourth proportional to 28,134.37, 38,824 and 15,556.69 is: 21,467.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,134.37 : 38,824 = 15,556.69 : x
  2. Step 2: Convert to fraction form
    28,134.37/38,824 = 15,556.69/x
  3. Step 3: Cross multiply
    28,134.37x = 38,824 × 15,556.69
  4. Step 4: Simplify right side
    28,134.37x = 603,972,932.56
  5. Step 5: Solve for x
    x = 603,972,932.56/28,134.37
  6. Step 6: Final answer
    x = 21,467.44

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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.