Home / 13,503.92-20,255.89-3,643.20

Finding the Fourth Proportional to 13,503.92, 20,255.89 and 3,643.20

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Solution

The fourth proportional to 13,503.92, 20,255.89 and 3,643.20 is: 5,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,503.92 : 20,255.89 = 3,643.20 : x
  2. Step 2: Convert to fraction form
    13,503.92/20,255.89 = 3,643.20/x
  3. Step 3: Cross multiply
    13,503.92x = 20,255.89 × 3,643.20
  4. Step 4: Simplify right side
    13,503.92x = 73,796,258.45
  5. Step 5: Solve for x
    x = 73,796,258.45/13,503.92
  6. Step 6: Final answer
    x = 5,464.80

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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.