Home / 28,911.21-43,366.82-9,189.77

Finding the Fourth Proportional to 28,911.21, 43,366.82 and 9,189.77

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Solution

The fourth proportional to 28,911.21, 43,366.82 and 9,189.77 is: 13,784.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,911.21 : 43,366.82 = 9,189.77 : x
  2. Step 2: Convert to fraction form
    28,911.21/43,366.82 = 9,189.77/x
  3. Step 3: Cross multiply
    28,911.21x = 43,366.82 × 9,189.77
  4. Step 4: Simplify right side
    28,911.21x = 398,530,838.65
  5. Step 5: Solve for x
    x = 398,530,838.65/28,911.21
  6. Step 6: Final answer
    x = 13,784.65

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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.