Home / 12,391.41-18,590.37-4,072.71

Finding the Fourth Proportional to 12,391.41, 18,590.37 and 4,072.71

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Solution

The fourth proportional to 12,391.41, 18,590.37 and 4,072.71 is: 6,110.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.41 : 18,590.37 = 4,072.71 : x
  2. Step 2: Convert to fraction form
    12,391.41/18,590.37 = 4,072.71/x
  3. Step 3: Cross multiply
    12,391.41x = 18,590.37 × 4,072.71
  4. Step 4: Simplify right side
    12,391.41x = 75,713,185.80
  5. Step 5: Solve for x
    x = 75,713,185.80/12,391.41
  6. Step 6: Final answer
    x = 6,110.13

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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.