Home / 28,517.30-39,355.16-15,942.05

Finding the Fourth Proportional to 28,517.30, 39,355.16 and 15,942.05

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Solution

The fourth proportional to 28,517.30, 39,355.16 and 15,942.05 is: 22,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,517.30 : 39,355.16 = 15,942.05 : x
  2. Step 2: Convert to fraction form
    28,517.30/39,355.16 = 15,942.05/x
  3. Step 3: Cross multiply
    28,517.30x = 39,355.16 × 15,942.05
  4. Step 4: Simplify right side
    28,517.30x = 627,401,651.99
  5. Step 5: Solve for x
    x = 627,401,651.99/28,517.30
  6. Step 6: Final answer
    x = 22,000.74

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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.