Home / 11,984.85-17,966.21-6,128.55

Finding the Fourth Proportional to 11,984.85, 17,966.21 and 6,128.55

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Solution

The fourth proportional to 11,984.85, 17,966.21 and 6,128.55 is: 9,187.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,984.85 : 17,966.21 = 6,128.55 : x
  2. Step 2: Convert to fraction form
    11,984.85/17,966.21 = 6,128.55/x
  3. Step 3: Cross multiply
    11,984.85x = 17,966.21 × 6,128.55
  4. Step 4: Simplify right side
    11,984.85x = 110,106,785.65
  5. Step 5: Solve for x
    x = 110,106,785.65/11,984.85
  6. Step 6: Final answer
    x = 9,187.16

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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.