Home / 13,412.72-20,120.64-5,099

Finding the Fourth Proportional to 13,412.72, 20,120.64 and 5,099

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Solution

The fourth proportional to 13,412.72, 20,120.64 and 5,099 is: 7,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,412.72 : 20,120.64 = 5,099 : x
  2. Step 2: Convert to fraction form
    13,412.72/20,120.64 = 5,099/x
  3. Step 3: Cross multiply
    13,412.72x = 20,120.64 × 5,099
  4. Step 4: Simplify right side
    13,412.72x = 102,595,143.36
  5. Step 5: Solve for x
    x = 102,595,143.36/13,412.72
  6. Step 6: Final answer
    x = 7,649.09

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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.