Home / 12,819.94-19,218.46-6,900

Finding the Fourth Proportional to 12,819.94, 19,218.46 and 6,900

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Solution

The fourth proportional to 12,819.94, 19,218.46 and 6,900 is: 10,343.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.94 : 19,218.46 = 6,900 : x
  2. Step 2: Convert to fraction form
    12,819.94/19,218.46 = 6,900/x
  3. Step 3: Cross multiply
    12,819.94x = 19,218.46 × 6,900
  4. Step 4: Simplify right side
    12,819.94x = 132,607,374
  5. Step 5: Solve for x
    x = 132,607,374/12,819.94
  6. Step 6: Final answer
    x = 10,343.84

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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.