Home / 11,388.06-15,716.52-6,609.78

Finding the Fourth Proportional to 11,388.06, 15,716.52 and 6,609.78

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Solution

The fourth proportional to 11,388.06, 15,716.52 and 6,609.78 is: 9,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.06 : 15,716.52 = 6,609.78 : x
  2. Step 2: Convert to fraction form
    11,388.06/15,716.52 = 6,609.78/x
  3. Step 3: Cross multiply
    11,388.06x = 15,716.52 × 6,609.78
  4. Step 4: Simplify right side
    11,388.06x = 103,882,739.57
  5. Step 5: Solve for x
    x = 103,882,739.57/11,388.06
  6. Step 6: Final answer
    x = 9,122.08

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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.