Home / 13,581.26-20,371.91-3,720.63

Finding the Fourth Proportional to 13,581.26, 20,371.91 and 3,720.63

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Solution

The fourth proportional to 13,581.26, 20,371.91 and 3,720.63 is: 5,580.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.26 : 20,371.91 = 3,720.63 : x
  2. Step 2: Convert to fraction form
    13,581.26/20,371.91 = 3,720.63/x
  3. Step 3: Cross multiply
    13,581.26x = 20,371.91 × 3,720.63
  4. Step 4: Simplify right side
    13,581.26x = 75,796,219.04
  5. Step 5: Solve for x
    x = 75,796,219.04/13,581.26
  6. Step 6: Final answer
    x = 5,580.94

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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.