Home / 28,918.45-43,388.48-11,400.49

Finding the Fourth Proportional to 28,918.45, 43,388.48 and 11,400.49

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Solution

The fourth proportional to 28,918.45, 43,388.48 and 11,400.49 is: 17,104.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,918.45 : 43,388.48 = 11,400.49 : x
  2. Step 2: Convert to fraction form
    28,918.45/43,388.48 = 11,400.49/x
  3. Step 3: Cross multiply
    28,918.45x = 43,388.48 × 11,400.49
  4. Step 4: Simplify right side
    28,918.45x = 494,649,932.36
  5. Step 5: Solve for x
    x = 494,649,932.36/28,918.45
  6. Step 6: Final answer
    x = 17,104.99

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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.