Home / 13,603.24-20,404.80-3,742.60

Finding the Fourth Proportional to 13,603.24, 20,404.80 and 3,742.60

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Solution

The fourth proportional to 13,603.24, 20,404.80 and 3,742.60 is: 5,613.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.24 : 20,404.80 = 3,742.60 : x
  2. Step 2: Convert to fraction form
    13,603.24/20,404.80 = 3,742.60/x
  3. Step 3: Cross multiply
    13,603.24x = 20,404.80 × 3,742.60
  4. Step 4: Simplify right side
    13,603.24x = 76,367,004.48
  5. Step 5: Solve for x
    x = 76,367,004.48/13,603.24
  6. Step 6: Final answer
    x = 5,613.88

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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.