Home / 11,724.11-16,180.36-6,419.72

Finding the Fourth Proportional to 11,724.11, 16,180.36 and 6,419.72

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Solution

The fourth proportional to 11,724.11, 16,180.36 and 6,419.72 is: 8,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.11 : 16,180.36 = 6,419.72 : x
  2. Step 2: Convert to fraction form
    11,724.11/16,180.36 = 6,419.72/x
  3. Step 3: Cross multiply
    11,724.11x = 16,180.36 × 6,419.72
  4. Step 4: Simplify right side
    11,724.11x = 103,873,405.10
  5. Step 5: Solve for x
    x = 103,873,405.10/11,724.11
  6. Step 6: Final answer
    x = 8,859.81

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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.