Home / 11,724.64-16,180-6,419.44

Finding the Fourth Proportional to 11,724.64, 16,180 and 6,419.44

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Solution

The fourth proportional to 11,724.64, 16,180 and 6,419.44 is: 8,858.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,724.64 : 16,180 = 6,419.44 : x
  2. Step 2: Convert to fraction form
    11,724.64/16,180 = 6,419.44/x
  3. Step 3: Cross multiply
    11,724.64x = 16,180 × 6,419.44
  4. Step 4: Simplify right side
    11,724.64x = 103,866,539.20
  5. Step 5: Solve for x
    x = 103,866,539.20/11,724.64
  6. Step 6: Final answer
    x = 8,858.83

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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.