Home / 21,469.15-29,629.14-11,909.98

Finding the Fourth Proportional to 21,469.15, 29,629.14 and 11,909.98

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Solution

The fourth proportional to 21,469.15, 29,629.14 and 11,909.98 is: 16,436.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,469.15 : 29,629.14 = 11,909.98 : x
  2. Step 2: Convert to fraction form
    21,469.15/29,629.14 = 11,909.98/x
  3. Step 3: Cross multiply
    21,469.15x = 29,629.14 × 11,909.98
  4. Step 4: Simplify right side
    21,469.15x = 352,882,464.82
  5. Step 5: Solve for x
    x = 352,882,464.82/21,469.15
  6. Step 6: Final answer
    x = 16,436.72

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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.