Home / 21,932.20-30,267.18-12,371.98

Finding the Fourth Proportional to 21,932.20, 30,267.18 and 12,371.98

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Solution

The fourth proportional to 21,932.20, 30,267.18 and 12,371.98 is: 17,073.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,932.20 : 30,267.18 = 12,371.98 : x
  2. Step 2: Convert to fraction form
    21,932.20/30,267.18 = 12,371.98/x
  3. Step 3: Cross multiply
    21,932.20x = 30,267.18 × 12,371.98
  4. Step 4: Simplify right side
    21,932.20x = 374,464,945.62
  5. Step 5: Solve for x
    x = 374,464,945.62/21,932.20
  6. Step 6: Final answer
    x = 17,073.75

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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.