Home / 20,881.44-31,304.56-14,291.36

Finding the Fourth Proportional to 20,881.44, 31,304.56 and 14,291.36

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Solution

The fourth proportional to 20,881.44, 31,304.56 and 14,291.36 is: 21,424.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.44 : 31,304.56 = 14,291.36 : x
  2. Step 2: Convert to fraction form
    20,881.44/31,304.56 = 14,291.36/x
  3. Step 3: Cross multiply
    20,881.44x = 31,304.56 × 14,291.36
  4. Step 4: Simplify right side
    20,881.44x = 447,384,736.60
  5. Step 5: Solve for x
    x = 447,384,736.60/20,881.44
  6. Step 6: Final answer
    x = 21,424.99

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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.