Home / 11,767.40-17,645.70-5,190.20

Finding the Fourth Proportional to 11,767.40, 17,645.70 and 5,190.20

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Solution

The fourth proportional to 11,767.40, 17,645.70 and 5,190.20 is: 7,782.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,767.40 : 17,645.70 = 5,190.20 : x
  2. Step 2: Convert to fraction form
    11,767.40/17,645.70 = 5,190.20/x
  3. Step 3: Cross multiply
    11,767.40x = 17,645.70 × 5,190.20
  4. Step 4: Simplify right side
    11,767.40x = 91,584,712.14
  5. Step 5: Solve for x
    x = 91,584,712.14/11,767.40
  6. Step 6: Final answer
    x = 7,782.92

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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.