Home / 21,889.94-30,176.60-15,591.38

Finding the Fourth Proportional to 21,889.94, 30,176.60 and 15,591.38

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Solution

The fourth proportional to 21,889.94, 30,176.60 and 15,591.38 is: 21,493.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.94 : 30,176.60 = 15,591.38 : x
  2. Step 2: Convert to fraction form
    21,889.94/30,176.60 = 15,591.38/x
  3. Step 3: Cross multiply
    21,889.94x = 30,176.60 × 15,591.38
  4. Step 4: Simplify right side
    21,889.94x = 470,494,608.87
  5. Step 5: Solve for x
    x = 470,494,608.87/21,889.94
  6. Step 6: Final answer
    x = 21,493.65

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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.