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Finding the Fourth Proportional to 28,969.92, 39,982.29 and 16,227.99

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Solution

The fourth proportional to 28,969.92, 39,982.29 and 16,227.99 is: 22,396.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.92 : 39,982.29 = 16,227.99 : x
  2. Step 2: Convert to fraction form
    28,969.92/39,982.29 = 16,227.99/x
  3. Step 3: Cross multiply
    28,969.92x = 39,982.29 × 16,227.99
  4. Step 4: Simplify right side
    28,969.92x = 648,832,202.30
  5. Step 5: Solve for x
    x = 648,832,202.30/28,969.92
  6. Step 6: Final answer
    x = 22,396.76

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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.