Home / 11,918.15-17,882.70-6,078.86

Finding the Fourth Proportional to 11,918.15, 17,882.70 and 6,078.86

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Solution

The fourth proportional to 11,918.15, 17,882.70 and 6,078.86 is: 9,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.15 : 17,882.70 = 6,078.86 : x
  2. Step 2: Convert to fraction form
    11,918.15/17,882.70 = 6,078.86/x
  3. Step 3: Cross multiply
    11,918.15x = 17,882.70 × 6,078.86
  4. Step 4: Simplify right side
    11,918.15x = 108,706,429.72
  5. Step 5: Solve for x
    x = 108,706,429.72/11,918.15
  6. Step 6: Final answer
    x = 9,121.08

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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.