Home / 43,419-65,127.79-13,836.43

Finding the Fourth Proportional to 43,419, 65,127.79 and 13,836.43

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Solution

The fourth proportional to 43,419, 65,127.79 and 13,836.43 is: 20,754.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,419 : 65,127.79 = 13,836.43 : x
  2. Step 2: Convert to fraction form
    43,419/65,127.79 = 13,836.43/x
  3. Step 3: Cross multiply
    43,419x = 65,127.79 × 13,836.43
  4. Step 4: Simplify right side
    43,419x = 901,136,107.39
  5. Step 5: Solve for x
    x = 901,136,107.39/43,419
  6. Step 6: Final answer
    x = 20,754.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.