Home / 18,121.05-25,008.12-10,163.72

Finding the Fourth Proportional to 18,121.05, 25,008.12 and 10,163.72

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Solution

The fourth proportional to 18,121.05, 25,008.12 and 10,163.72 is: 14,026.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.05 : 25,008.12 = 10,163.72 : x
  2. Step 2: Convert to fraction form
    18,121.05/25,008.12 = 10,163.72/x
  3. Step 3: Cross multiply
    18,121.05x = 25,008.12 × 10,163.72
  4. Step 4: Simplify right side
    18,121.05x = 254,175,404.37
  5. Step 5: Solve for x
    x = 254,175,404.37/18,121.05
  6. Step 6: Final answer
    x = 14,026.53

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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.