Home / 28,128.93-38,811.60-16,796.37

Finding the Fourth Proportional to 28,128.93, 38,811.60 and 16,796.37

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Solution

The fourth proportional to 28,128.93, 38,811.60 and 16,796.37 is: 23,175.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,128.93 : 38,811.60 = 16,796.37 : x
  2. Step 2: Convert to fraction form
    28,128.93/38,811.60 = 16,796.37/x
  3. Step 3: Cross multiply
    28,128.93x = 38,811.60 × 16,796.37
  4. Step 4: Simplify right side
    28,128.93x = 651,893,993.89
  5. Step 5: Solve for x
    x = 651,893,993.89/28,128.93
  6. Step 6: Final answer
    x = 23,175.21

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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.