Home / 11,919.75-16,449.62-6,615.06

Finding the Fourth Proportional to 11,919.75, 16,449.62 and 6,615.06

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Solution

The fourth proportional to 11,919.75, 16,449.62 and 6,615.06 is: 9,128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.75 : 16,449.62 = 6,615.06 : x
  2. Step 2: Convert to fraction form
    11,919.75/16,449.62 = 6,615.06/x
  3. Step 3: Cross multiply
    11,919.75x = 16,449.62 × 6,615.06
  4. Step 4: Simplify right side
    11,919.75x = 108,815,190.20
  5. Step 5: Solve for x
    x = 108,815,190.20/11,919.75
  6. Step 6: Final answer
    x = 9,128.98

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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.