Home / 28,198.88-38,916.96-16,100.72

Finding the Fourth Proportional to 28,198.88, 38,916.96 and 16,100.72

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Solution

The fourth proportional to 28,198.88, 38,916.96 and 16,100.72 is: 22,220.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,198.88 : 38,916.96 = 16,100.72 : x
  2. Step 2: Convert to fraction form
    28,198.88/38,916.96 = 16,100.72/x
  3. Step 3: Cross multiply
    28,198.88x = 38,916.96 × 16,100.72
  4. Step 4: Simplify right side
    28,198.88x = 626,591,076.21
  5. Step 5: Solve for x
    x = 626,591,076.21/28,198.88
  6. Step 6: Final answer
    x = 22,220.42

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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.