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Finding the Fourth Proportional to 20,086.76, 30,094.50 and 17,135.12

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Solution

The fourth proportional to 20,086.76, 30,094.50 and 17,135.12 is: 25,672.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.76 : 30,094.50 = 17,135.12 : x
  2. Step 2: Convert to fraction form
    20,086.76/30,094.50 = 17,135.12/x
  3. Step 3: Cross multiply
    20,086.76x = 30,094.50 × 17,135.12
  4. Step 4: Simplify right side
    20,086.76x = 515,672,868.84
  5. Step 5: Solve for x
    x = 515,672,868.84/20,086.76
  6. Step 6: Final answer
    x = 25,672.28

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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.