Home / 28,367.64-39,147.03-15,620.58

Finding the Fourth Proportional to 28,367.64, 39,147.03 and 15,620.58

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Solution

The fourth proportional to 28,367.64, 39,147.03 and 15,620.58 is: 21,556.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,367.64 : 39,147.03 = 15,620.58 : x
  2. Step 2: Convert to fraction form
    28,367.64/39,147.03 = 15,620.58/x
  3. Step 3: Cross multiply
    28,367.64x = 39,147.03 × 15,620.58
  4. Step 4: Simplify right side
    28,367.64x = 611,499,313.88
  5. Step 5: Solve for x
    x = 611,499,313.88/28,367.64
  6. Step 6: Final answer
    x = 21,556.23

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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.