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Finding the Fourth Proportional to 20,500.59, 30,750.90 and 5,709.54

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Solution

The fourth proportional to 20,500.59, 30,750.90 and 5,709.54 is: 8,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.59 : 30,750.90 = 5,709.54 : x
  2. Step 2: Convert to fraction form
    20,500.59/30,750.90 = 5,709.54/x
  3. Step 3: Cross multiply
    20,500.59x = 30,750.90 × 5,709.54
  4. Step 4: Simplify right side
    20,500.59x = 175,573,493.59
  5. Step 5: Solve for x
    x = 175,573,493.59/20,500.59
  6. Step 6: Final answer
    x = 8,564.31

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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.