Home / 20,695.14-31,048.80-11,936.34

Finding the Fourth Proportional to 20,695.14, 31,048.80 and 11,936.34

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Solution

The fourth proportional to 20,695.14, 31,048.80 and 11,936.34 is: 17,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.14 : 31,048.80 = 11,936.34 : x
  2. Step 2: Convert to fraction form
    20,695.14/31,048.80 = 11,936.34/x
  3. Step 3: Cross multiply
    20,695.14x = 31,048.80 × 11,936.34
  4. Step 4: Simplify right side
    20,695.14x = 370,609,033.39
  5. Step 5: Solve for x
    x = 370,609,033.39/20,695.14
  6. Step 6: Final answer
    x = 17,908.02

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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.