Home / 28,738.78-39,664.24-16,799.78

Finding the Fourth Proportional to 28,738.78, 39,664.24 and 16,799.78

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Solution

The fourth proportional to 28,738.78, 39,664.24 and 16,799.78 is: 23,186.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.78 : 39,664.24 = 16,799.78 : x
  2. Step 2: Convert to fraction form
    28,738.78/39,664.24 = 16,799.78/x
  3. Step 3: Cross multiply
    28,738.78x = 39,664.24 × 16,799.78
  4. Step 4: Simplify right side
    28,738.78x = 666,350,505.87
  5. Step 5: Solve for x
    x = 666,350,505.87/28,738.78
  6. Step 6: Final answer
    x = 23,186.46

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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.