Home / 13,996.87-21,000.75-5,229.73

Finding the Fourth Proportional to 13,996.87, 21,000.75 and 5,229.73

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Solution

The fourth proportional to 13,996.87, 21,000.75 and 5,229.73 is: 7,846.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.87 : 21,000.75 = 5,229.73 : x
  2. Step 2: Convert to fraction form
    13,996.87/21,000.75 = 5,229.73/x
  3. Step 3: Cross multiply
    13,996.87x = 21,000.75 × 5,229.73
  4. Step 4: Simplify right side
    13,996.87x = 109,828,252.30
  5. Step 5: Solve for x
    x = 109,828,252.30/13,996.87
  6. Step 6: Final answer
    x = 7,846.63

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1.5x scale

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.