Home / 10,163.88-15,239.75-3,918.71

Finding the Fourth Proportional to 10,163.88, 15,239.75 and 3,918.71

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Solution

The fourth proportional to 10,163.88, 15,239.75 and 3,918.71 is: 5,875.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,163.88 : 15,239.75 = 3,918.71 : x
  2. Step 2: Convert to fraction form
    10,163.88/15,239.75 = 3,918.71/x
  3. Step 3: Cross multiply
    10,163.88x = 15,239.75 × 3,918.71
  4. Step 4: Simplify right side
    10,163.88x = 59,720,179.23
  5. Step 5: Solve for x
    x = 59,720,179.23/10,163.88
  6. Step 6: Final answer
    x = 5,875.73

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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.