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Finding the Fourth Proportional to 21,676.56, 29,913.66 and 11,740.56

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Solution

The fourth proportional to 21,676.56, 29,913.66 and 11,740.56 is: 16,201.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.56 : 29,913.66 = 11,740.56 : x
  2. Step 2: Convert to fraction form
    21,676.56/29,913.66 = 11,740.56/x
  3. Step 3: Cross multiply
    21,676.56x = 29,913.66 × 11,740.56
  4. Step 4: Simplify right side
    21,676.56x = 351,203,120.05
  5. Step 5: Solve for x
    x = 351,203,120.05/21,676.56
  6. Step 6: Final answer
    x = 16,201.98

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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.