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Finding the Fourth Proportional to 20,200.70, 30,344.70 and 17,086.88

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Solution

The fourth proportional to 20,200.70, 30,344.70 and 17,086.88 is: 25,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.70 : 30,344.70 = 17,086.88 : x
  2. Step 2: Convert to fraction form
    20,200.70/30,344.70 = 17,086.88/x
  3. Step 3: Cross multiply
    20,200.70x = 30,344.70 × 17,086.88
  4. Step 4: Simplify right side
    20,200.70x = 518,496,247.54
  5. Step 5: Solve for x
    x = 518,496,247.54/20,200.70
  6. Step 6: Final answer
    x = 25,667.24

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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.