Home / 11,912.64-16,439.88-6,607.68

Finding the Fourth Proportional to 11,912.64, 16,439.88 and 6,607.68

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Solution

The fourth proportional to 11,912.64, 16,439.88 and 6,607.68 is: 9,118.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.64 : 16,439.88 = 6,607.68 : x
  2. Step 2: Convert to fraction form
    11,912.64/16,439.88 = 6,607.68/x
  3. Step 3: Cross multiply
    11,912.64x = 16,439.88 × 6,607.68
  4. Step 4: Simplify right side
    11,912.64x = 108,629,466.28
  5. Step 5: Solve for x
    x = 108,629,466.28/11,912.64
  6. Step 6: Final answer
    x = 9,118.84

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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.