Home / 28,859.91-43,296.53-9,138.47

Finding the Fourth Proportional to 28,859.91, 43,296.53 and 9,138.47

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Solution

The fourth proportional to 28,859.91, 43,296.53 and 9,138.47 is: 13,709.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.91 : 43,296.53 = 9,138.47 : x
  2. Step 2: Convert to fraction form
    28,859.91/43,296.53 = 9,138.47/x
  3. Step 3: Cross multiply
    28,859.91x = 43,296.53 × 9,138.47
  4. Step 4: Simplify right side
    28,859.91x = 395,663,778.33
  5. Step 5: Solve for x
    x = 395,663,778.33/28,859.91
  6. Step 6: Final answer
    x = 13,709.81

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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.