Home / 28,878-39,851.20-16,131.41

Finding the Fourth Proportional to 28,878, 39,851.20 and 16,131.41

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Solution

The fourth proportional to 28,878, 39,851.20 and 16,131.41 is: 22,261.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878 : 39,851.20 = 16,131.41 : x
  2. Step 2: Convert to fraction form
    28,878/39,851.20 = 16,131.41/x
  3. Step 3: Cross multiply
    28,878x = 39,851.20 × 16,131.41
  4. Step 4: Simplify right side
    28,878x = 642,856,046.19
  5. Step 5: Solve for x
    x = 642,856,046.19/28,878
  6. Step 6: Final answer
    x = 22,261.10

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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.