Home / 20,081.72-30,100.71-13,491.56

Finding the Fourth Proportional to 20,081.72, 30,100.71 and 13,491.56

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Solution

The fourth proportional to 20,081.72, 30,100.71 and 13,491.56 is: 20,222.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.72 : 30,100.71 = 13,491.56 : x
  2. Step 2: Convert to fraction form
    20,081.72/30,100.71 = 13,491.56/x
  3. Step 3: Cross multiply
    20,081.72x = 30,100.71 × 13,491.56
  4. Step 4: Simplify right side
    20,081.72x = 406,105,660.85
  5. Step 5: Solve for x
    x = 406,105,660.85/20,081.72
  6. Step 6: Final answer
    x = 20,222.65

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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.