Home / 18,640.08-25,734.96-11,928.60

Finding the Fourth Proportional to 18,640.08, 25,734.96 and 11,928.60

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Solution

The fourth proportional to 18,640.08, 25,734.96 and 11,928.60 is: 16,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,640.08 : 25,734.96 = 11,928.60 : x
  2. Step 2: Convert to fraction form
    18,640.08/25,734.96 = 11,928.60/x
  3. Step 3: Cross multiply
    18,640.08x = 25,734.96 × 11,928.60
  4. Step 4: Simplify right side
    18,640.08x = 306,982,043.86
  5. Step 5: Solve for x
    x = 306,982,043.86/18,640.08
  6. Step 6: Final answer
    x = 16,468.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.