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Finding the Fourth Proportional to 20,604.99, 30,911.94 and 7,277.52

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Solution

The fourth proportional to 20,604.99, 30,911.94 and 7,277.52 is: 10,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,604.99 : 30,911.94 = 7,277.52 : x
  2. Step 2: Convert to fraction form
    20,604.99/30,911.94 = 7,277.52/x
  3. Step 3: Cross multiply
    20,604.99x = 30,911.94 × 7,277.52
  4. Step 4: Simplify right side
    20,604.99x = 224,962,261.59
  5. Step 5: Solve for x
    x = 224,962,261.59/20,604.99
  6. Step 6: Final answer
    x = 10,917.85

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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.