Home / 15,474.75-21,355.52-8,401.16

Finding the Fourth Proportional to 15,474.75, 21,355.52 and 8,401.16

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Solution

The fourth proportional to 15,474.75, 21,355.52 and 8,401.16 is: 11,593.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,474.75 : 21,355.52 = 8,401.16 : x
  2. Step 2: Convert to fraction form
    15,474.75/21,355.52 = 8,401.16/x
  3. Step 3: Cross multiply
    15,474.75x = 21,355.52 × 8,401.16
  4. Step 4: Simplify right side
    15,474.75x = 179,410,991.62
  5. Step 5: Solve for x
    x = 179,410,991.62/15,474.75
  6. Step 6: Final answer
    x = 11,593.79

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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.