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Finding the Fourth Proportional to 28,676.88, 43,004.39 and 8,682.21

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Solution

The fourth proportional to 28,676.88, 43,004.39 and 8,682.21 is: 13,020.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,676.88 : 43,004.39 = 8,682.21 : x
  2. Step 2: Convert to fraction form
    28,676.88/43,004.39 = 8,682.21/x
  3. Step 3: Cross multiply
    28,676.88x = 43,004.39 × 8,682.21
  4. Step 4: Simplify right side
    28,676.88x = 373,373,101.49
  5. Step 5: Solve for x
    x = 373,373,101.49/28,676.88
  6. Step 6: Final answer
    x = 13,020.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.