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Finding the Fourth Proportional to 28,676.88, 39,564.72 and 16,738.56

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Solution

The fourth proportional to 28,676.88, 39,564.72 and 16,738.56 is: 23,093.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.88 : 39,564.72 = 16,738.56 : x
  2. Step 2: Convert to fraction form
    28,676.88/39,564.72 = 16,738.56/x
  3. Step 3: Cross multiply
    28,676.88x = 39,564.72 × 16,738.56
  4. Step 4: Simplify right side
    28,676.88x = 662,256,439.60
  5. Step 5: Solve for x
    x = 662,256,439.60/28,676.88
  6. Step 6: Final answer
    x = 23,093.74

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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.