Home / 11,912.88-16,439.80-6,607.58

Finding the Fourth Proportional to 11,912.88, 16,439.80 and 6,607.58

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Solution

The fourth proportional to 11,912.88, 16,439.80 and 6,607.58 is: 9,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.88 : 16,439.80 = 6,607.58 : x
  2. Step 2: Convert to fraction form
    11,912.88/16,439.80 = 6,607.58/x
  3. Step 3: Cross multiply
    11,912.88x = 16,439.80 × 6,607.58
  4. Step 4: Simplify right side
    11,912.88x = 108,627,293.68
  5. Step 5: Solve for x
    x = 108,627,293.68/11,912.88
  6. Step 6: Final answer
    x = 9,118.47

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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.