Home / 12,116.22-16,719.51-6,811.80

Finding the Fourth Proportional to 12,116.22, 16,719.51 and 6,811.80

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Solution

The fourth proportional to 12,116.22, 16,719.51 and 6,811.80 is: 9,399.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.22 : 16,719.51 = 6,811.80 : x
  2. Step 2: Convert to fraction form
    12,116.22/16,719.51 = 6,811.80/x
  3. Step 3: Cross multiply
    12,116.22x = 16,719.51 × 6,811.80
  4. Step 4: Simplify right side
    12,116.22x = 113,889,958.22
  5. Step 5: Solve for x
    x = 113,889,958.22/12,116.22
  6. Step 6: Final answer
    x = 9,399.79

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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.