Home / 13,906.08-20,858.40-3,517.92

Finding the Fourth Proportional to 13,906.08, 20,858.40 and 3,517.92

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Solution

The fourth proportional to 13,906.08, 20,858.40 and 3,517.92 is: 5,276.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.08 : 20,858.40 = 3,517.92 : x
  2. Step 2: Convert to fraction form
    13,906.08/20,858.40 = 3,517.92/x
  3. Step 3: Cross multiply
    13,906.08x = 20,858.40 × 3,517.92
  4. Step 4: Simplify right side
    13,906.08x = 73,378,182.53
  5. Step 5: Solve for x
    x = 73,378,182.53/13,906.08
  6. Step 6: Final answer
    x = 5,276.70

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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.