Home / 28,453.82-39,270.22-15,879.38

Finding the Fourth Proportional to 28,453.82, 39,270.22 and 15,879.38

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Solution

The fourth proportional to 28,453.82, 39,270.22 and 15,879.38 is: 21,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,453.82 : 39,270.22 = 15,879.38 : x
  2. Step 2: Convert to fraction form
    28,453.82/39,270.22 = 15,879.38/x
  3. Step 3: Cross multiply
    28,453.82x = 39,270.22 × 15,879.38
  4. Step 4: Simplify right side
    28,453.82x = 623,586,510.01
  5. Step 5: Solve for x
    x = 623,586,510.01/28,453.82
  6. Step 6: Final answer
    x = 21,915.74

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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.