Home / 13,615.55-20,429.19-7,380.03

Finding the Fourth Proportional to 13,615.55, 20,429.19 and 7,380.03

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Solution

The fourth proportional to 13,615.55, 20,429.19 and 7,380.03 is: 11,073.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.55 : 20,429.19 = 7,380.03 : x
  2. Step 2: Convert to fraction form
    13,615.55/20,429.19 = 7,380.03/x
  3. Step 3: Cross multiply
    13,615.55x = 20,429.19 × 7,380.03
  4. Step 4: Simplify right side
    13,615.55x = 150,768,035.08
  5. Step 5: Solve for x
    x = 150,768,035.08/13,615.55
  6. Step 6: Final answer
    x = 11,073.22

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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.