Home / 13,581.08-20,370.94-3,720.20

Finding the Fourth Proportional to 13,581.08, 20,370.94 and 3,720.20

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Solution

The fourth proportional to 13,581.08, 20,370.94 and 3,720.20 is: 5,580.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.08 : 20,370.94 = 3,720.20 : x
  2. Step 2: Convert to fraction form
    13,581.08/20,370.94 = 3,720.20/x
  3. Step 3: Cross multiply
    13,581.08x = 20,370.94 × 3,720.20
  4. Step 4: Simplify right side
    13,581.08x = 75,783,970.99
  5. Step 5: Solve for x
    x = 75,783,970.99/13,581.08
  6. Step 6: Final answer
    x = 5,580.11

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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.