Home / 11,895.85-17,842.39-3,131.45

Finding the Fourth Proportional to 11,895.85, 17,842.39 and 3,131.45

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Solution

The fourth proportional to 11,895.85, 17,842.39 and 3,131.45 is: 4,696.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.85 : 17,842.39 = 3,131.45 : x
  2. Step 2: Convert to fraction form
    11,895.85/17,842.39 = 3,131.45/x
  3. Step 3: Cross multiply
    11,895.85x = 17,842.39 × 3,131.45
  4. Step 4: Simplify right side
    11,895.85x = 55,872,466.87
  5. Step 5: Solve for x
    x = 55,872,466.87/11,895.85
  6. Step 6: Final answer
    x = 4,696.80

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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.