Home / 11,947.86-17,919.38-11,355.09

Finding the Fourth Proportional to 11,947.86, 17,919.38 and 11,355.09

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Solution

The fourth proportional to 11,947.86, 17,919.38 and 11,355.09 is: 17,030.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.86 : 17,919.38 = 11,355.09 : x
  2. Step 2: Convert to fraction form
    11,947.86/17,919.38 = 11,355.09/x
  3. Step 3: Cross multiply
    11,947.86x = 17,919.38 × 11,355.09
  4. Step 4: Simplify right side
    11,947.86x = 203,476,099.46
  5. Step 5: Solve for x
    x = 203,476,099.46/11,947.86
  6. Step 6: Final answer
    x = 17,030.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.