Home / 12,163.29-18,237.24-5,139.69

Finding the Fourth Proportional to 12,163.29, 18,237.24 and 5,139.69

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Solution

The fourth proportional to 12,163.29, 18,237.24 and 5,139.69 is: 7,706.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,163.29 : 18,237.24 = 5,139.69 : x
  2. Step 2: Convert to fraction form
    12,163.29/18,237.24 = 5,139.69/x
  3. Step 3: Cross multiply
    12,163.29x = 18,237.24 × 5,139.69
  4. Step 4: Simplify right side
    12,163.29x = 93,733,760.06
  5. Step 5: Solve for x
    x = 93,733,760.06/12,163.29
  6. Step 6: Final answer
    x = 7,706.28

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1.5x scale

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.