Home / 13,578.98-20,369.88-3,718.26

Finding the Fourth Proportional to 13,578.98, 20,369.88 and 3,718.26

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Solution

The fourth proportional to 13,578.98, 20,369.88 and 3,718.26 is: 5,577.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.98 : 20,369.88 = 3,718.26 : x
  2. Step 2: Convert to fraction form
    13,578.98/20,369.88 = 3,718.26/x
  3. Step 3: Cross multiply
    13,578.98x = 20,369.88 × 3,718.26
  4. Step 4: Simplify right side
    13,578.98x = 75,740,510.01
  5. Step 5: Solve for x
    x = 75,740,510.01/13,578.98
  6. Step 6: Final answer
    x = 5,577.78

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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.