Home / 13,579.34-20,368.84-3,718.61

Finding the Fourth Proportional to 13,579.34, 20,368.84 and 3,718.61

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Solution

The fourth proportional to 13,579.34, 20,368.84 and 3,718.61 is: 5,577.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.34 : 20,368.84 = 3,718.61 : x
  2. Step 2: Convert to fraction form
    13,579.34/20,368.84 = 3,718.61/x
  3. Step 3: Cross multiply
    13,579.34x = 20,368.84 × 3,718.61
  4. Step 4: Simplify right side
    13,579.34x = 75,743,660.97
  5. Step 5: Solve for x
    x = 75,743,660.97/13,579.34
  6. Step 6: Final answer
    x = 5,577.86

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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.