Home / 11,780.03-17,669.75-5,115.15

Finding the Fourth Proportional to 11,780.03, 17,669.75 and 5,115.15

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Solution

The fourth proportional to 11,780.03, 17,669.75 and 5,115.15 is: 7,672.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,780.03 : 17,669.75 = 5,115.15 : x
  2. Step 2: Convert to fraction form
    11,780.03/17,669.75 = 5,115.15/x
  3. Step 3: Cross multiply
    11,780.03x = 17,669.75 × 5,115.15
  4. Step 4: Simplify right side
    11,780.03x = 90,383,396.14
  5. Step 5: Solve for x
    x = 90,383,396.14/11,780.03
  6. Step 6: Final answer
    x = 7,672.59

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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.