Home / 11,129.40-16,694.10-10,956.60

Finding the Fourth Proportional to 11,129.40, 16,694.10 and 10,956.60

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Solution

The fourth proportional to 11,129.40, 16,694.10 and 10,956.60 is: 16,434.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.40 : 16,694.10 = 10,956.60 : x
  2. Step 2: Convert to fraction form
    11,129.40/16,694.10 = 10,956.60/x
  3. Step 3: Cross multiply
    11,129.40x = 16,694.10 × 10,956.60
  4. Step 4: Simplify right side
    11,129.40x = 182,910,576.06
  5. Step 5: Solve for x
    x = 182,910,576.06/11,129.40
  6. Step 6: Final answer
    x = 16,434.90

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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.