Home / 20,733.50-28,612.24-11,781.05

Finding the Fourth Proportional to 20,733.50, 28,612.24 and 11,781.05

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Solution

The fourth proportional to 20,733.50, 28,612.24 and 11,781.05 is: 16,257.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,733.50 : 28,612.24 = 11,781.05 : x
  2. Step 2: Convert to fraction form
    20,733.50/28,612.24 = 11,781.05/x
  3. Step 3: Cross multiply
    20,733.50x = 28,612.24 × 11,781.05
  4. Step 4: Simplify right side
    20,733.50x = 337,082,057.54
  5. Step 5: Solve for x
    x = 337,082,057.54/20,733.50
  6. Step 6: Final answer
    x = 16,257.84

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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.