Home / 13,581.87-20,373.71-3,720.32

Finding the Fourth Proportional to 13,581.87, 20,373.71 and 3,720.32

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Solution

The fourth proportional to 13,581.87, 20,373.71 and 3,720.32 is: 5,580.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.87 : 20,373.71 = 3,720.32 : x
  2. Step 2: Convert to fraction form
    13,581.87/20,373.71 = 3,720.32/x
  3. Step 3: Cross multiply
    13,581.87x = 20,373.71 × 3,720.32
  4. Step 4: Simplify right side
    13,581.87x = 75,796,720.79
  5. Step 5: Solve for x
    x = 75,796,720.79/13,581.87
  6. Step 6: Final answer
    x = 5,580.73

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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.