Home / 13,877.58-20,816.37-3,489.33

Finding the Fourth Proportional to 13,877.58, 20,816.37 and 3,489.33

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Solution

The fourth proportional to 13,877.58, 20,816.37 and 3,489.33 is: 5,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,877.58 : 20,816.37 = 3,489.33 : x
  2. Step 2: Convert to fraction form
    13,877.58/20,816.37 = 3,489.33/x
  3. Step 3: Cross multiply
    13,877.58x = 20,816.37 × 3,489.33
  4. Step 4: Simplify right side
    13,877.58x = 72,635,135.49
  5. Step 5: Solve for x
    x = 72,635,135.49/13,877.58
  6. Step 6: Final answer
    x = 5,233.99

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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.