Home / 20,361.11-28,102.77-11,864.63

Finding the Fourth Proportional to 20,361.11, 28,102.77 and 11,864.63

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Solution

The fourth proportional to 20,361.11, 28,102.77 and 11,864.63 is: 16,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.11 : 28,102.77 = 11,864.63 : x
  2. Step 2: Convert to fraction form
    20,361.11/28,102.77 = 11,864.63/x
  3. Step 3: Cross multiply
    20,361.11x = 28,102.77 × 11,864.63
  4. Step 4: Simplify right side
    20,361.11x = 333,428,968.03
  5. Step 5: Solve for x
    x = 333,428,968.03/20,361.11
  6. Step 6: Final answer
    x = 16,375.78

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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.