Home / 11,912.60-16,440.40-6,609.13

Finding the Fourth Proportional to 11,912.60, 16,440.40 and 6,609.13

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Solution

The fourth proportional to 11,912.60, 16,440.40 and 6,609.13 is: 9,121.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.60 : 16,440.40 = 6,609.13 : x
  2. Step 2: Convert to fraction form
    11,912.60/16,440.40 = 6,609.13/x
  3. Step 3: Cross multiply
    11,912.60x = 16,440.40 × 6,609.13
  4. Step 4: Simplify right side
    11,912.60x = 108,656,740.85
  5. Step 5: Solve for x
    x = 108,656,740.85/11,912.60
  6. Step 6: Final answer
    x = 9,121.16

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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.