Home / 13,315.13-19,972.84-3,453.80

Finding the Fourth Proportional to 13,315.13, 19,972.84 and 3,453.80

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Solution

The fourth proportional to 13,315.13, 19,972.84 and 3,453.80 is: 5,180.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.13 : 19,972.84 = 3,453.80 : x
  2. Step 2: Convert to fraction form
    13,315.13/19,972.84 = 3,453.80/x
  3. Step 3: Cross multiply
    13,315.13x = 19,972.84 × 3,453.80
  4. Step 4: Simplify right side
    13,315.13x = 68,982,236.09
  5. Step 5: Solve for x
    x = 68,982,236.09/13,315.13
  6. Step 6: Final answer
    x = 5,180.74

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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.