Home / 13,579.75-20,370.23-3,718.81

Finding the Fourth Proportional to 13,579.75, 20,370.23 and 3,718.81

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Solution

The fourth proportional to 13,579.75, 20,370.23 and 3,718.81 is: 5,578.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.75 : 20,370.23 = 3,718.81 : x
  2. Step 2: Convert to fraction form
    13,579.75/20,370.23 = 3,718.81/x
  3. Step 3: Cross multiply
    13,579.75x = 20,370.23 × 3,718.81
  4. Step 4: Simplify right side
    13,579.75x = 75,752,894.58
  5. Step 5: Solve for x
    x = 75,752,894.58/13,579.75
  6. Step 6: Final answer
    x = 5,578.37

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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.