Home / 11,945.20-17,917.80-4,148.50

Finding the Fourth Proportional to 11,945.20, 17,917.80 and 4,148.50

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Solution

The fourth proportional to 11,945.20, 17,917.80 and 4,148.50 is: 6,222.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.20 : 17,917.80 = 4,148.50 : x
  2. Step 2: Convert to fraction form
    11,945.20/17,917.80 = 4,148.50/x
  3. Step 3: Cross multiply
    11,945.20x = 17,917.80 × 4,148.50
  4. Step 4: Simplify right side
    11,945.20x = 74,331,993.30
  5. Step 5: Solve for x
    x = 74,331,993.30/11,945.20
  6. Step 6: Final answer
    x = 6,222.75

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1.5x scale

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.