Home / 11,409.19-17,119.20-7,904.59

Finding the Fourth Proportional to 11,409.19, 17,119.20 and 7,904.59

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Solution

The fourth proportional to 11,409.19, 17,119.20 and 7,904.59 is: 11,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.19 : 17,119.20 = 7,904.59 : x
  2. Step 2: Convert to fraction form
    11,409.19/17,119.20 = 7,904.59/x
  3. Step 3: Cross multiply
    11,409.19x = 17,119.20 × 7,904.59
  4. Step 4: Simplify right side
    11,409.19x = 135,320,257.13
  5. Step 5: Solve for x
    x = 135,320,257.13/11,409.19
  6. Step 6: Final answer
    x = 11,860.64

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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.