Home / 21,282.18-29,369.17-11,721.89

Finding the Fourth Proportional to 21,282.18, 29,369.17 and 11,721.89

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Solution

The fourth proportional to 21,282.18, 29,369.17 and 11,721.89 is: 16,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.18 : 29,369.17 = 11,721.89 : x
  2. Step 2: Convert to fraction form
    21,282.18/29,369.17 = 11,721.89/x
  3. Step 3: Cross multiply
    21,282.18x = 29,369.17 × 11,721.89
  4. Step 4: Simplify right side
    21,282.18x = 344,262,003.98
  5. Step 5: Solve for x
    x = 344,262,003.98/21,282.18
  6. Step 6: Final answer
    x = 16,176.07

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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.