Home / 11,081.60-16,622.40-6,689.78

Finding the Fourth Proportional to 11,081.60, 16,622.40 and 6,689.78

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Solution

The fourth proportional to 11,081.60, 16,622.40 and 6,689.78 is: 10,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,081.60 : 16,622.40 = 6,689.78 : x
  2. Step 2: Convert to fraction form
    11,081.60/16,622.40 = 6,689.78/x
  3. Step 3: Cross multiply
    11,081.60x = 16,622.40 × 6,689.78
  4. Step 4: Simplify right side
    11,081.60x = 111,200,199.07
  5. Step 5: Solve for x
    x = 111,200,199.07/11,081.60
  6. Step 6: Final answer
    x = 10,034.67

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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.