Home / 20,403.12-30,601.44-7,928.85

Finding the Fourth Proportional to 20,403.12, 30,601.44 and 7,928.85

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Solution

The fourth proportional to 20,403.12, 30,601.44 and 7,928.85 is: 11,892.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.12 : 30,601.44 = 7,928.85 : x
  2. Step 2: Convert to fraction form
    20,403.12/30,601.44 = 7,928.85/x
  3. Step 3: Cross multiply
    20,403.12x = 30,601.44 × 7,928.85
  4. Step 4: Simplify right side
    20,403.12x = 242,634,227.54
  5. Step 5: Solve for x
    x = 242,634,227.54/20,403.12
  6. Step 6: Final answer
    x = 11,892.02

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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.