Home / 14,885.22-20,540.48-8,169.78

Finding the Fourth Proportional to 14,885.22, 20,540.48 and 8,169.78

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Solution

The fourth proportional to 14,885.22, 20,540.48 and 8,169.78 is: 11,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,885.22 : 20,540.48 = 8,169.78 : x
  2. Step 2: Convert to fraction form
    14,885.22/20,540.48 = 8,169.78/x
  3. Step 3: Cross multiply
    14,885.22x = 20,540.48 × 8,169.78
  4. Step 4: Simplify right side
    14,885.22x = 167,811,161.85
  5. Step 5: Solve for x
    x = 167,811,161.85/14,885.22
  6. Step 6: Final answer
    x = 11,273.68

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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.