Home / 11,415.20-17,109.09-5,871.15

Finding the Fourth Proportional to 11,415.20, 17,109.09 and 5,871.15

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Solution

The fourth proportional to 11,415.20, 17,109.09 and 5,871.15 is: 8,799.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.20 : 17,109.09 = 5,871.15 : x
  2. Step 2: Convert to fraction form
    11,415.20/17,109.09 = 5,871.15/x
  3. Step 3: Cross multiply
    11,415.20x = 17,109.09 × 5,871.15
  4. Step 4: Simplify right side
    11,415.20x = 100,450,033.75
  5. Step 5: Solve for x
    x = 100,450,033.75/11,415.20
  6. Step 6: Final answer
    x = 8,799.68

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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.