Home / 13,815.86-20,725.14-5,494.01

Finding the Fourth Proportional to 13,815.86, 20,725.14 and 5,494.01

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Solution

The fourth proportional to 13,815.86, 20,725.14 and 5,494.01 is: 8,241.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.86 : 20,725.14 = 5,494.01 : x
  2. Step 2: Convert to fraction form
    13,815.86/20,725.14 = 5,494.01/x
  3. Step 3: Cross multiply
    13,815.86x = 20,725.14 × 5,494.01
  4. Step 4: Simplify right side
    13,815.86x = 113,864,022.79
  5. Step 5: Solve for x
    x = 113,864,022.79/13,815.86
  6. Step 6: Final answer
    x = 8,241.55

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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.