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Finding the Fourth Proportional to 18,163.19, 25,063.81 and 10,203.86

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Solution

The fourth proportional to 18,163.19, 25,063.81 and 10,203.86 is: 14,080.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,163.19 : 25,063.81 = 10,203.86 : x
  2. Step 2: Convert to fraction form
    18,163.19/25,063.81 = 10,203.86/x
  3. Step 3: Cross multiply
    18,163.19x = 25,063.81 × 10,203.86
  4. Step 4: Simplify right side
    18,163.19x = 255,747,645.46
  5. Step 5: Solve for x
    x = 255,747,645.46/18,163.19
  6. Step 6: Final answer
    x = 14,080.54

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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.