Home / 21,178.30-29,231.36-14,383.82

Finding the Fourth Proportional to 21,178.30, 29,231.36 and 14,383.82

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Solution

The fourth proportional to 21,178.30, 29,231.36 and 14,383.82 is: 19,853.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.30 : 29,231.36 = 14,383.82 : x
  2. Step 2: Convert to fraction form
    21,178.30/29,231.36 = 14,383.82/x
  3. Step 3: Cross multiply
    21,178.30x = 29,231.36 × 14,383.82
  4. Step 4: Simplify right side
    21,178.30x = 420,458,620.60
  5. Step 5: Solve for x
    x = 420,458,620.60/21,178.30
  6. Step 6: Final answer
    x = 19,853.28

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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.