Home / 20,996.11-31,489.30-13,476.98

Finding the Fourth Proportional to 20,996.11, 31,489.30 and 13,476.98

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Solution

The fourth proportional to 20,996.11, 31,489.30 and 13,476.98 is: 20,212.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.11 : 31,489.30 = 13,476.98 : x
  2. Step 2: Convert to fraction form
    20,996.11/31,489.30 = 13,476.98/x
  3. Step 3: Cross multiply
    20,996.11x = 31,489.30 × 13,476.98
  4. Step 4: Simplify right side
    20,996.11x = 424,380,441.48
  5. Step 5: Solve for x
    x = 424,380,441.48/20,996.11
  6. Step 6: Final answer
    x = 20,212.34

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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.