Home / 28,745.25-39,672.09-16,172.43

Finding the Fourth Proportional to 28,745.25, 39,672.09 and 16,172.43

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Solution

The fourth proportional to 28,745.25, 39,672.09 and 16,172.43 is: 22,320.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,745.25 : 39,672.09 = 16,172.43 : x
  2. Step 2: Convert to fraction form
    28,745.25/39,672.09 = 16,172.43/x
  3. Step 3: Cross multiply
    28,745.25x = 39,672.09 × 16,172.43
  4. Step 4: Simplify right side
    28,745.25x = 641,594,098.48
  5. Step 5: Solve for x
    x = 641,594,098.48/28,745.25
  6. Step 6: Final answer
    x = 22,320.00

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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.