Home / 13,161.84-18,163.17-7,863.72

Finding the Fourth Proportional to 13,161.84, 18,163.17 and 7,863.72

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Solution

The fourth proportional to 13,161.84, 18,163.17 and 7,863.72 is: 10,851.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.84 : 18,163.17 = 7,863.72 : x
  2. Step 2: Convert to fraction form
    13,161.84/18,163.17 = 7,863.72/x
  3. Step 3: Cross multiply
    13,161.84x = 18,163.17 × 7,863.72
  4. Step 4: Simplify right side
    13,161.84x = 142,830,083.19
  5. Step 5: Solve for x
    x = 142,830,083.19/13,161.84
  6. Step 6: Final answer
    x = 10,851.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.