Home / 28,811.75-43,234.64-12,170.71

Finding the Fourth Proportional to 28,811.75, 43,234.64 and 12,170.71

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Solution

The fourth proportional to 28,811.75, 43,234.64 and 12,170.71 is: 18,263.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,811.75 : 43,234.64 = 12,170.71 : x
  2. Step 2: Convert to fraction form
    28,811.75/43,234.64 = 12,170.71/x
  3. Step 3: Cross multiply
    28,811.75x = 43,234.64 × 12,170.71
  4. Step 4: Simplify right side
    28,811.75x = 526,195,988.37
  5. Step 5: Solve for x
    x = 526,195,988.37/28,811.75
  6. Step 6: Final answer
    x = 18,263.24

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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.