Home / 13,634.36-20,442.78-5,742.02

Finding the Fourth Proportional to 13,634.36, 20,442.78 and 5,742.02

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Solution

The fourth proportional to 13,634.36, 20,442.78 and 5,742.02 is: 8,609.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.36 : 20,442.78 = 5,742.02 : x
  2. Step 2: Convert to fraction form
    13,634.36/20,442.78 = 5,742.02/x
  3. Step 3: Cross multiply
    13,634.36x = 20,442.78 × 5,742.02
  4. Step 4: Simplify right side
    13,634.36x = 117,382,851.62
  5. Step 5: Solve for x
    x = 117,382,851.62/13,634.36
  6. Step 6: Final answer
    x = 8,609.34

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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.