Home / 13,634.60-20,423.10-11,330.60

Finding the Fourth Proportional to 13,634.60, 20,423.10 and 11,330.60

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Solution

The fourth proportional to 13,634.60, 20,423.10 and 11,330.60 is: 16,971.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,634.60 : 20,423.10 = 11,330.60 : x
  2. Step 2: Convert to fraction form
    13,634.60/20,423.10 = 11,330.60/x
  3. Step 3: Cross multiply
    13,634.60x = 20,423.10 × 11,330.60
  4. Step 4: Simplify right side
    13,634.60x = 231,405,976.86
  5. Step 5: Solve for x
    x = 231,405,976.86/13,634.60
  6. Step 6: Final answer
    x = 16,971.97

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1.5x scale

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.