Home / 28,928.96-43,399.25-12,288.86

Finding the Fourth Proportional to 28,928.96, 43,399.25 and 12,288.86

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Solution

The fourth proportional to 28,928.96, 43,399.25 and 12,288.86 is: 18,435.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,928.96 : 43,399.25 = 12,288.86 : x
  2. Step 2: Convert to fraction form
    28,928.96/43,399.25 = 12,288.86/x
  3. Step 3: Cross multiply
    28,928.96x = 43,399.25 × 12,288.86
  4. Step 4: Simplify right side
    28,928.96x = 533,327,245.91
  5. Step 5: Solve for x
    x = 533,327,245.91/28,928.96
  6. Step 6: Final answer
    x = 18,435.76

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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.