Home / 11,213.31-16,819.95-3,422.13

Finding the Fourth Proportional to 11,213.31, 16,819.95 and 3,422.13

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Solution

The fourth proportional to 11,213.31, 16,819.95 and 3,422.13 is: 5,133.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,213.31 : 16,819.95 = 3,422.13 : x
  2. Step 2: Convert to fraction form
    11,213.31/16,819.95 = 3,422.13/x
  3. Step 3: Cross multiply
    11,213.31x = 16,819.95 × 3,422.13
  4. Step 4: Simplify right side
    11,213.31x = 57,560,005.25
  5. Step 5: Solve for x
    x = 57,560,005.25/11,213.31
  6. Step 6: Final answer
    x = 5,133.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.