Home / 13,718.92-20,579.89-5,397.84

Finding the Fourth Proportional to 13,718.92, 20,579.89 and 5,397.84

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Solution

The fourth proportional to 13,718.92, 20,579.89 and 5,397.84 is: 8,097.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.92 : 20,579.89 = 5,397.84 : x
  2. Step 2: Convert to fraction form
    13,718.92/20,579.89 = 5,397.84/x
  3. Step 3: Cross multiply
    13,718.92x = 20,579.89 × 5,397.84
  4. Step 4: Simplify right side
    13,718.92x = 111,086,850.54
  5. Step 5: Solve for x
    x = 111,086,850.54/13,718.92
  6. Step 6: Final answer
    x = 8,097.35

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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.