Home / 13,351.72-20,028.72-3,490.98

Finding the Fourth Proportional to 13,351.72, 20,028.72 and 3,490.98

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Solution

The fourth proportional to 13,351.72, 20,028.72 and 3,490.98 is: 5,236.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.72 : 20,028.72 = 3,490.98 : x
  2. Step 2: Convert to fraction form
    13,351.72/20,028.72 = 3,490.98/x
  3. Step 3: Cross multiply
    13,351.72x = 20,028.72 × 3,490.98
  4. Step 4: Simplify right side
    13,351.72x = 69,919,860.95
  5. Step 5: Solve for x
    x = 69,919,860.95/13,351.72
  6. Step 6: Final answer
    x = 5,236.77

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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.