Home / 13,918.26-20,878.60-3,530

Finding the Fourth Proportional to 13,918.26, 20,878.60 and 3,530

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Solution

The fourth proportional to 13,918.26, 20,878.60 and 3,530 is: 5,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.26 : 20,878.60 = 3,530 : x
  2. Step 2: Convert to fraction form
    13,918.26/20,878.60 = 3,530/x
  3. Step 3: Cross multiply
    13,918.26x = 20,878.60 × 3,530
  4. Step 4: Simplify right side
    13,918.26x = 73,701,458
  5. Step 5: Solve for x
    x = 73,701,458/13,918.26
  6. Step 6: Final answer
    x = 5,295.31

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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.