Home / 28,163.21-38,865.44-15,416.33

Finding the Fourth Proportional to 28,163.21, 38,865.44 and 15,416.33

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Solution

The fourth proportional to 28,163.21, 38,865.44 and 15,416.33 is: 21,274.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.21 : 38,865.44 = 15,416.33 : x
  2. Step 2: Convert to fraction form
    28,163.21/38,865.44 = 15,416.33/x
  3. Step 3: Cross multiply
    28,163.21x = 38,865.44 × 15,416.33
  4. Step 4: Simplify right side
    28,163.21x = 599,162,292.85
  5. Step 5: Solve for x
    x = 599,162,292.85/28,163.21
  6. Step 6: Final answer
    x = 21,274.65

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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.