Home / 11,028.94-15,218.49-6,782.20

Finding the Fourth Proportional to 11,028.94, 15,218.49 and 6,782.20

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Solution

The fourth proportional to 11,028.94, 15,218.49 and 6,782.20 is: 9,358.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,028.94 : 15,218.49 = 6,782.20 : x
  2. Step 2: Convert to fraction form
    11,028.94/15,218.49 = 6,782.20/x
  3. Step 3: Cross multiply
    11,028.94x = 15,218.49 × 6,782.20
  4. Step 4: Simplify right side
    11,028.94x = 103,214,842.88
  5. Step 5: Solve for x
    x = 103,214,842.88/11,028.94
  6. Step 6: Final answer
    x = 9,358.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.