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Finding the Fourth Proportional to 20,195.70, 30,337.20 and 17,081.88

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Solution

The fourth proportional to 20,195.70, 30,337.20 and 17,081.88 is: 25,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.70 : 30,337.20 = 17,081.88 : x
  2. Step 2: Convert to fraction form
    20,195.70/30,337.20 = 17,081.88/x
  3. Step 3: Cross multiply
    20,195.70x = 30,337.20 × 17,081.88
  4. Step 4: Simplify right side
    20,195.70x = 518,216,409.94
  5. Step 5: Solve for x
    x = 518,216,409.94/20,195.70
  6. Step 6: Final answer
    x = 25,659.74

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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.