Home / 13,579.61-20,370.82-3,718.89

Finding the Fourth Proportional to 13,579.61, 20,370.82 and 3,718.89

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Solution

The fourth proportional to 13,579.61, 20,370.82 and 3,718.89 is: 5,578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.61 : 20,370.82 = 3,718.89 : x
  2. Step 2: Convert to fraction form
    13,579.61/20,370.82 = 3,718.89/x
  3. Step 3: Cross multiply
    13,579.61x = 20,370.82 × 3,718.89
  4. Step 4: Simplify right side
    13,579.61x = 75,756,736.94
  5. Step 5: Solve for x
    x = 75,756,736.94/13,579.61
  6. Step 6: Final answer
    x = 5,578.71

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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.