Home / 18,222.67-25,149.18-11,153.80

Finding the Fourth Proportional to 18,222.67, 25,149.18 and 11,153.80

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Solution

The fourth proportional to 18,222.67, 25,149.18 and 11,153.80 is: 15,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.67 : 25,149.18 = 11,153.80 : x
  2. Step 2: Convert to fraction form
    18,222.67/25,149.18 = 11,153.80/x
  3. Step 3: Cross multiply
    18,222.67x = 25,149.18 × 11,153.80
  4. Step 4: Simplify right side
    18,222.67x = 280,508,923.88
  5. Step 5: Solve for x
    x = 280,508,923.88/18,222.67
  6. Step 6: Final answer
    x = 15,393.40

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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.