Home / 28,137-38,829.78-16,959.72

Finding the Fourth Proportional to 28,137, 38,829.78 and 16,959.72

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Solution

The fourth proportional to 28,137, 38,829.78 and 16,959.72 is: 23,404.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,137 : 38,829.78 = 16,959.72 : x
  2. Step 2: Convert to fraction form
    28,137/38,829.78 = 16,959.72/x
  3. Step 3: Cross multiply
    28,137x = 38,829.78 × 16,959.72
  4. Step 4: Simplify right side
    28,137x = 658,542,196.46
  5. Step 5: Solve for x
    x = 658,542,196.46/28,137
  6. Step 6: Final answer
    x = 23,404.85

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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.