Home / 28,915.44-39,891.22-19,467.60

Finding the Fourth Proportional to 28,915.44, 39,891.22 and 19,467.60

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Solution

The fourth proportional to 28,915.44, 39,891.22 and 19,467.60 is: 26,857.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.44 : 39,891.22 = 19,467.60 : x
  2. Step 2: Convert to fraction form
    28,915.44/39,891.22 = 19,467.60/x
  3. Step 3: Cross multiply
    28,915.44x = 39,891.22 × 19,467.60
  4. Step 4: Simplify right side
    28,915.44x = 776,586,314.47
  5. Step 5: Solve for x
    x = 776,586,314.47/28,915.44
  6. Step 6: Final answer
    x = 26,857.15

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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.