Home / 13,163.88-18,166.59-8,127.93

Finding the Fourth Proportional to 13,163.88, 18,166.59 and 8,127.93

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Solution

The fourth proportional to 13,163.88, 18,166.59 and 8,127.93 is: 11,216.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.88 : 18,166.59 = 8,127.93 : x
  2. Step 2: Convert to fraction form
    13,163.88/18,166.59 = 8,127.93/x
  3. Step 3: Cross multiply
    13,163.88x = 18,166.59 × 8,127.93
  4. Step 4: Simplify right side
    13,163.88x = 147,656,771.86
  5. Step 5: Solve for x
    x = 147,656,771.86/13,163.88
  6. Step 6: Final answer
    x = 11,216.81

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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.