Home / 11,837.75-17,744.60-7,680.40

Finding the Fourth Proportional to 11,837.75, 17,744.60 and 7,680.40

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Solution

The fourth proportional to 11,837.75, 17,744.60 and 7,680.40 is: 11,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,837.75 : 17,744.60 = 7,680.40 : x
  2. Step 2: Convert to fraction form
    11,837.75/17,744.60 = 7,680.40/x
  3. Step 3: Cross multiply
    11,837.75x = 17,744.60 × 7,680.40
  4. Step 4: Simplify right side
    11,837.75x = 136,285,600.68
  5. Step 5: Solve for x
    x = 136,285,600.68/11,837.75
  6. Step 6: Final answer
    x = 11,512.80

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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.