Home / 13,578.80-20,369.12-3,717.26

Finding the Fourth Proportional to 13,578.80, 20,369.12 and 3,717.26

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Solution

The fourth proportional to 13,578.80, 20,369.12 and 3,717.26 is: 5,576.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,578.80 : 20,369.12 = 3,717.26 : x
  2. Step 2: Convert to fraction form
    13,578.80/20,369.12 = 3,717.26/x
  3. Step 3: Cross multiply
    13,578.80x = 20,369.12 × 3,717.26
  4. Step 4: Simplify right side
    13,578.80x = 75,717,315.01
  5. Step 5: Solve for x
    x = 75,717,315.01/13,578.80
  6. Step 6: Final answer
    x = 5,576.14

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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.