Home / 21,306.11-29,403.71-11,745.98

Finding the Fourth Proportional to 21,306.11, 29,403.71 and 11,745.98

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Solution

The fourth proportional to 21,306.11, 29,403.71 and 11,745.98 is: 16,210.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.11 : 29,403.71 = 11,745.98 : x
  2. Step 2: Convert to fraction form
    21,306.11/29,403.71 = 11,745.98/x
  3. Step 3: Cross multiply
    21,306.11x = 29,403.71 × 11,745.98
  4. Step 4: Simplify right side
    21,306.11x = 345,375,338.15
  5. Step 5: Solve for x
    x = 345,375,338.15/21,306.11
  6. Step 6: Final answer
    x = 16,210.16

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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.