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Finding the Fourth Proportional to 20,347, 28,076.49 and 11,850.99

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Solution

The fourth proportional to 20,347, 28,076.49 and 11,850.99 is: 16,352.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,347 : 28,076.49 = 11,850.99 : x
  2. Step 2: Convert to fraction form
    20,347/28,076.49 = 11,850.99/x
  3. Step 3: Cross multiply
    20,347x = 28,076.49 × 11,850.99
  4. Step 4: Simplify right side
    20,347x = 332,734,202.23
  5. Step 5: Solve for x
    x = 332,734,202.23/20,347
  6. Step 6: Final answer
    x = 16,352.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.