Home / 20,202.72-27,875.56-11,817.60

Finding the Fourth Proportional to 20,202.72, 27,875.56 and 11,817.60

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Solution

The fourth proportional to 20,202.72, 27,875.56 and 11,817.60 is: 16,305.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,202.72 : 27,875.56 = 11,817.60 : x
  2. Step 2: Convert to fraction form
    20,202.72/27,875.56 = 11,817.60/x
  3. Step 3: Cross multiply
    20,202.72x = 27,875.56 × 11,817.60
  4. Step 4: Simplify right side
    20,202.72x = 329,422,217.86
  5. Step 5: Solve for x
    x = 329,422,217.86/20,202.72
  6. Step 6: Final answer
    x = 16,305.83

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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.