Home / 11,912.40-16,438.86-6,876.27

Finding the Fourth Proportional to 11,912.40, 16,438.86 and 6,876.27

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Solution

The fourth proportional to 11,912.40, 16,438.86 and 6,876.27 is: 9,489.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,912.40 : 16,438.86 = 6,876.27 : x
  2. Step 2: Convert to fraction form
    11,912.40/16,438.86 = 6,876.27/x
  3. Step 3: Cross multiply
    11,912.40x = 16,438.86 × 6,876.27
  4. Step 4: Simplify right side
    11,912.40x = 113,038,039.85
  5. Step 5: Solve for x
    x = 113,038,039.85/11,912.40
  6. Step 6: Final answer
    x = 9,489.11

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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.