Home / 10,109.47-15,163.68-3,869

Finding the Fourth Proportional to 10,109.47, 15,163.68 and 3,869

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Solution

The fourth proportional to 10,109.47, 15,163.68 and 3,869 is: 5,803.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,109.47 : 15,163.68 = 3,869 : x
  2. Step 2: Convert to fraction form
    10,109.47/15,163.68 = 3,869/x
  3. Step 3: Cross multiply
    10,109.47x = 15,163.68 × 3,869
  4. Step 4: Simplify right side
    10,109.47x = 58,668,277.92
  5. Step 5: Solve for x
    x = 58,668,277.92/10,109.47
  6. Step 6: Final answer
    x = 5,803.30

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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.