Home / 18,121.50-25,007.54-10,163.72

Finding the Fourth Proportional to 18,121.50, 25,007.54 and 10,163.72

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Solution

The fourth proportional to 18,121.50, 25,007.54 and 10,163.72 is: 14,025.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.50 : 25,007.54 = 10,163.72 : x
  2. Step 2: Convert to fraction form
    18,121.50/25,007.54 = 10,163.72/x
  3. Step 3: Cross multiply
    18,121.50x = 25,007.54 × 10,163.72
  4. Step 4: Simplify right side
    18,121.50x = 254,169,458.59
  5. Step 5: Solve for x
    x = 254,169,458.59/18,121.50
  6. Step 6: Final answer
    x = 14,025.85

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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.