Home / 20,849.05-28,771.15-11,650.68

Finding the Fourth Proportional to 20,849.05, 28,771.15 and 11,650.68

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Solution

The fourth proportional to 20,849.05, 28,771.15 and 11,650.68 is: 16,077.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849.05 : 28,771.15 = 11,650.68 : x
  2. Step 2: Convert to fraction form
    20,849.05/28,771.15 = 11,650.68/x
  3. Step 3: Cross multiply
    20,849.05x = 28,771.15 × 11,650.68
  4. Step 4: Simplify right side
    20,849.05x = 335,203,259.77
  5. Step 5: Solve for x
    x = 335,203,259.77/20,849.05
  6. Step 6: Final answer
    x = 16,077.63

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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.