Home / 20,434.68-28,200.35-11,481.65

Finding the Fourth Proportional to 20,434.68, 28,200.35 and 11,481.65

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Solution

The fourth proportional to 20,434.68, 28,200.35 and 11,481.65 is: 15,844.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.68 : 28,200.35 = 11,481.65 : x
  2. Step 2: Convert to fraction form
    20,434.68/28,200.35 = 11,481.65/x
  3. Step 3: Cross multiply
    20,434.68x = 28,200.35 × 11,481.65
  4. Step 4: Simplify right side
    20,434.68x = 323,786,542.03
  5. Step 5: Solve for x
    x = 323,786,542.03/20,434.68
  6. Step 6: Final answer
    x = 15,844.95

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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.