Home / 10,106.68-15,163.02-5,179.78

Finding the Fourth Proportional to 10,106.68, 15,163.02 and 5,179.78

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Solution

The fourth proportional to 10,106.68, 15,163.02 and 5,179.78 is: 7,771.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,106.68 : 15,163.02 = 5,179.78 : x
  2. Step 2: Convert to fraction form
    10,106.68/15,163.02 = 5,179.78/x
  3. Step 3: Cross multiply
    10,106.68x = 15,163.02 × 5,179.78
  4. Step 4: Simplify right side
    10,106.68x = 78,541,107.74
  5. Step 5: Solve for x
    x = 78,541,107.74/10,106.68
  6. Step 6: Final answer
    x = 7,771.21

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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.