Home / 21,818.11-30,108.99-11,882.11

Finding the Fourth Proportional to 21,818.11, 30,108.99 and 11,882.11

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Solution

The fourth proportional to 21,818.11, 30,108.99 and 11,882.11 is: 16,397.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,818.11 : 30,108.99 = 11,882.11 : x
  2. Step 2: Convert to fraction form
    21,818.11/30,108.99 = 11,882.11/x
  3. Step 3: Cross multiply
    21,818.11x = 30,108.99 × 11,882.11
  4. Step 4: Simplify right side
    21,818.11x = 357,758,323.49
  5. Step 5: Solve for x
    x = 357,758,323.49/21,818.11
  6. Step 6: Final answer
    x = 16,397.31

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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.