Home / 11,885.58-17,828.37-3,120.48

Finding the Fourth Proportional to 11,885.58, 17,828.37 and 3,120.48

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Solution

The fourth proportional to 11,885.58, 17,828.37 and 3,120.48 is: 4,680.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,885.58 : 17,828.37 = 3,120.48 : x
  2. Step 2: Convert to fraction form
    11,885.58/17,828.37 = 3,120.48/x
  3. Step 3: Cross multiply
    11,885.58x = 17,828.37 × 3,120.48
  4. Step 4: Simplify right side
    11,885.58x = 55,633,072.02
  5. Step 5: Solve for x
    x = 55,633,072.02/11,885.58
  6. Step 6: Final answer
    x = 4,680.72

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Similar ratio
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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.