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Finding the Fourth Proportional to 20,600.90, 30,902.37 and 10,759.40

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Solution

The fourth proportional to 20,600.90, 30,902.37 and 10,759.40 is: 16,139.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.90 : 30,902.37 = 10,759.40 : x
  2. Step 2: Convert to fraction form
    20,600.90/30,902.37 = 10,759.40/x
  3. Step 3: Cross multiply
    20,600.90x = 30,902.37 × 10,759.40
  4. Step 4: Simplify right side
    20,600.90x = 332,490,905.98
  5. Step 5: Solve for x
    x = 332,490,905.98/20,600.90
  6. Step 6: Final answer
    x = 16,139.63

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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.