Home / 21,845.75-30,149.58-13,462.25

Finding the Fourth Proportional to 21,845.75, 30,149.58 and 13,462.25

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Solution

The fourth proportional to 21,845.75, 30,149.58 and 13,462.25 is: 18,579.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,845.75 : 30,149.58 = 13,462.25 : x
  2. Step 2: Convert to fraction form
    21,845.75/30,149.58 = 13,462.25/x
  3. Step 3: Cross multiply
    21,845.75x = 30,149.58 × 13,462.25
  4. Step 4: Simplify right side
    21,845.75x = 405,881,183.36
  5. Step 5: Solve for x
    x = 405,881,183.36/21,845.75
  6. Step 6: Final answer
    x = 18,579.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.