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Finding the Fourth Proportional to 15,202.44, 20,974.44 and 8,487

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Solution

The fourth proportional to 15,202.44, 20,974.44 and 8,487 is: 11,709.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,202.44 : 20,974.44 = 8,487 : x
  2. Step 2: Convert to fraction form
    15,202.44/20,974.44 = 8,487/x
  3. Step 3: Cross multiply
    15,202.44x = 20,974.44 × 8,487
  4. Step 4: Simplify right side
    15,202.44x = 178,010,072.28
  5. Step 5: Solve for x
    x = 178,010,072.28/15,202.44
  6. Step 6: Final answer
    x = 11,709.31

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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.