Home / 28,855.32-43,298.22-20,475.96

Finding the Fourth Proportional to 28,855.32, 43,298.22 and 20,475.96

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Solution

The fourth proportional to 28,855.32, 43,298.22 and 20,475.96 is: 30,724.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,855.32 : 43,298.22 = 20,475.96 : x
  2. Step 2: Convert to fraction form
    28,855.32/43,298.22 = 20,475.96/x
  3. Step 3: Cross multiply
    28,855.32x = 43,298.22 × 20,475.96
  4. Step 4: Simplify right side
    28,855.32x = 886,572,620.79
  5. Step 5: Solve for x
    x = 886,572,620.79/28,855.32
  6. Step 6: Final answer
    x = 30,724.75

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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.