Home / 20,161.43-27,822.15-11,086.77

Finding the Fourth Proportional to 20,161.43, 27,822.15 and 11,086.77

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Solution

The fourth proportional to 20,161.43, 27,822.15 and 11,086.77 is: 15,299.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.43 : 27,822.15 = 11,086.77 : x
  2. Step 2: Convert to fraction form
    20,161.43/27,822.15 = 11,086.77/x
  3. Step 3: Cross multiply
    20,161.43x = 27,822.15 × 11,086.77
  4. Step 4: Simplify right side
    20,161.43x = 308,457,777.96
  5. Step 5: Solve for x
    x = 308,457,777.96/20,161.43
  6. Step 6: Final answer
    x = 15,299.40

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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.