Home / 20,140.27-27,793.58-11,188.60

Finding the Fourth Proportional to 20,140.27, 27,793.58 and 11,188.60

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Solution

The fourth proportional to 20,140.27, 27,793.58 and 11,188.60 is: 15,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,140.27 : 27,793.58 = 11,188.60 : x
  2. Step 2: Convert to fraction form
    20,140.27/27,793.58 = 11,188.60/x
  3. Step 3: Cross multiply
    20,140.27x = 27,793.58 × 11,188.60
  4. Step 4: Simplify right side
    20,140.27x = 310,971,249.19
  5. Step 5: Solve for x
    x = 310,971,249.19/20,140.27
  6. Step 6: Final answer
    x = 15,440.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.