Home / 13,768.05-20,653.60-4,405.87

Finding the Fourth Proportional to 13,768.05, 20,653.60 and 4,405.87

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Solution

The fourth proportional to 13,768.05, 20,653.60 and 4,405.87 is: 6,609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.05 : 20,653.60 = 4,405.87 : x
  2. Step 2: Convert to fraction form
    13,768.05/20,653.60 = 4,405.87/x
  3. Step 3: Cross multiply
    13,768.05x = 20,653.60 × 4,405.87
  4. Step 4: Simplify right side
    13,768.05x = 90,997,076.63
  5. Step 5: Solve for x
    x = 90,997,076.63/13,768.05
  6. Step 6: Final answer
    x = 6,609.29

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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.