Home / 21,282.23-29,369.20-11,721.93

Finding the Fourth Proportional to 21,282.23, 29,369.20 and 11,721.93

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Solution

The fourth proportional to 21,282.23, 29,369.20 and 11,721.93 is: 16,176.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,282.23 : 29,369.20 = 11,721.93 : x
  2. Step 2: Convert to fraction form
    21,282.23/29,369.20 = 11,721.93/x
  3. Step 3: Cross multiply
    21,282.23x = 29,369.20 × 11,721.93
  4. Step 4: Simplify right side
    21,282.23x = 344,263,647.95
  5. Step 5: Solve for x
    x = 344,263,647.95/21,282.23
  6. Step 6: Final answer
    x = 16,176.11

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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.