Home / 13,581.07-20,371.37-3,720.33

Finding the Fourth Proportional to 13,581.07, 20,371.37 and 3,720.33

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Solution

The fourth proportional to 13,581.07, 20,371.37 and 3,720.33 is: 5,580.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.07 : 20,371.37 = 3,720.33 : x
  2. Step 2: Convert to fraction form
    13,581.07/20,371.37 = 3,720.33/x
  3. Step 3: Cross multiply
    13,581.07x = 20,371.37 × 3,720.33
  4. Step 4: Simplify right side
    13,581.07x = 75,788,200.35
  5. Step 5: Solve for x
    x = 75,788,200.35/13,581.07
  6. Step 6: Final answer
    x = 5,580.43

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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.