Home / 12,553.62-18,819.70-5,153.46

Finding the Fourth Proportional to 12,553.62, 18,819.70 and 5,153.46

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Solution

The fourth proportional to 12,553.62, 18,819.70 and 5,153.46 is: 7,725.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,553.62 : 18,819.70 = 5,153.46 : x
  2. Step 2: Convert to fraction form
    12,553.62/18,819.70 = 5,153.46/x
  3. Step 3: Cross multiply
    12,553.62x = 18,819.70 × 5,153.46
  4. Step 4: Simplify right side
    12,553.62x = 96,986,571.16
  5. Step 5: Solve for x
    x = 96,986,571.16/12,553.62
  6. Step 6: Final answer
    x = 7,725.79

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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.