Home / 18,221.36-27,330.36-5,072.72

Finding the Fourth Proportional to 18,221.36, 27,330.36 and 5,072.72

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Solution

The fourth proportional to 18,221.36, 27,330.36 and 5,072.72 is: 7,608.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.36 : 27,330.36 = 5,072.72 : x
  2. Step 2: Convert to fraction form
    18,221.36/27,330.36 = 5,072.72/x
  3. Step 3: Cross multiply
    18,221.36x = 27,330.36 × 5,072.72
  4. Step 4: Simplify right side
    18,221.36x = 138,639,263.78
  5. Step 5: Solve for x
    x = 138,639,263.78/18,221.36
  6. Step 6: Final answer
    x = 7,608.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.