Home / 18,761.91-28,101.23-13,481.07

Finding the Fourth Proportional to 18,761.91, 28,101.23 and 13,481.07

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Solution

The fourth proportional to 18,761.91, 28,101.23 and 13,481.07 is: 20,191.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,761.91 : 28,101.23 = 13,481.07 : x
  2. Step 2: Convert to fraction form
    18,761.91/28,101.23 = 13,481.07/x
  3. Step 3: Cross multiply
    18,761.91x = 28,101.23 × 13,481.07
  4. Step 4: Simplify right side
    18,761.91x = 378,834,581.31
  5. Step 5: Solve for x
    x = 378,834,581.31/18,761.91
  6. Step 6: Final answer
    x = 20,191.69

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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.