Home / 20,171.88-30,259.62-5,380.92

Finding the Fourth Proportional to 20,171.88, 30,259.62 and 5,380.92

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Solution

The fourth proportional to 20,171.88, 30,259.62 and 5,380.92 is: 8,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.88 : 30,259.62 = 5,380.92 : x
  2. Step 2: Convert to fraction form
    20,171.88/30,259.62 = 5,380.92/x
  3. Step 3: Cross multiply
    20,171.88x = 30,259.62 × 5,380.92
  4. Step 4: Simplify right side
    20,171.88x = 162,824,594.45
  5. Step 5: Solve for x
    x = 162,824,594.45/20,171.88
  6. Step 6: Final answer
    x = 8,071.86

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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.