Home / 20,749.76-28,634.68-11,797.81

Finding the Fourth Proportional to 20,749.76, 28,634.68 and 11,797.81

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Solution

The fourth proportional to 20,749.76, 28,634.68 and 11,797.81 is: 16,280.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.76 : 28,634.68 = 11,797.81 : x
  2. Step 2: Convert to fraction form
    20,749.76/28,634.68 = 11,797.81/x
  3. Step 3: Cross multiply
    20,749.76x = 28,634.68 × 11,797.81
  4. Step 4: Simplify right side
    20,749.76x = 337,826,514.05
  5. Step 5: Solve for x
    x = 337,826,514.05/20,749.76
  6. Step 6: Final answer
    x = 16,280.98

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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.