Home / 20,612.88-28,445.78-11,660.19

Finding the Fourth Proportional to 20,612.88, 28,445.78 and 11,660.19

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Solution

The fourth proportional to 20,612.88, 28,445.78 and 11,660.19 is: 16,091.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,612.88 : 28,445.78 = 11,660.19 : x
  2. Step 2: Convert to fraction form
    20,612.88/28,445.78 = 11,660.19/x
  3. Step 3: Cross multiply
    20,612.88x = 28,445.78 × 11,660.19
  4. Step 4: Simplify right side
    20,612.88x = 331,682,998.97
  5. Step 5: Solve for x
    x = 331,682,998.97/20,612.88
  6. Step 6: Final answer
    x = 16,091.06

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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.