Home / 21,186-29,235.68-11,625.66

Finding the Fourth Proportional to 21,186, 29,235.68 and 11,625.66

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Solution

The fourth proportional to 21,186, 29,235.68 and 11,625.66 is: 16,042.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186 : 29,235.68 = 11,625.66 : x
  2. Step 2: Convert to fraction form
    21,186/29,235.68 = 11,625.66/x
  3. Step 3: Cross multiply
    21,186x = 29,235.68 × 11,625.66
  4. Step 4: Simplify right side
    21,186x = 339,884,017.42
  5. Step 5: Solve for x
    x = 339,884,017.42/21,186
  6. Step 6: Final answer
    x = 16,042.86

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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.