Home / 13,913.25-20,871.09-3,525

Finding the Fourth Proportional to 13,913.25, 20,871.09 and 3,525

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Solution

The fourth proportional to 13,913.25, 20,871.09 and 3,525 is: 5,287.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,913.25 : 20,871.09 = 3,525 : x
  2. Step 2: Convert to fraction form
    13,913.25/20,871.09 = 3,525/x
  3. Step 3: Cross multiply
    13,913.25x = 20,871.09 × 3,525
  4. Step 4: Simplify right side
    13,913.25x = 73,570,592.25
  5. Step 5: Solve for x
    x = 73,570,592.25/13,913.25
  6. Step 6: Final answer
    x = 5,287.81

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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.