Home / 12,721.41-19,085.09-3,955.86

Finding the Fourth Proportional to 12,721.41, 19,085.09 and 3,955.86

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Solution

The fourth proportional to 12,721.41, 19,085.09 and 3,955.86 is: 5,934.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.41 : 19,085.09 = 3,955.86 : x
  2. Step 2: Convert to fraction form
    12,721.41/19,085.09 = 3,955.86/x
  3. Step 3: Cross multiply
    12,721.41x = 19,085.09 × 3,955.86
  4. Step 4: Simplify right side
    12,721.41x = 75,497,924.35
  5. Step 5: Solve for x
    x = 75,497,924.35/12,721.41
  6. Step 6: Final answer
    x = 5,934.71

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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.