Home / 13,161.39-18,163.79-7,497.91

Finding the Fourth Proportional to 13,161.39, 18,163.79 and 7,497.91

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Solution

The fourth proportional to 13,161.39, 18,163.79 and 7,497.91 is: 10,347.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.39 : 18,163.79 = 7,497.91 : x
  2. Step 2: Convert to fraction form
    13,161.39/18,163.79 = 7,497.91/x
  3. Step 3: Cross multiply
    13,161.39x = 18,163.79 × 7,497.91
  4. Step 4: Simplify right side
    13,161.39x = 136,190,436.01
  5. Step 5: Solve for x
    x = 136,190,436.01/13,161.39
  6. Step 6: Final answer
    x = 10,347.73

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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.