Home / 13,128.98-19,694.68-5,229.59

Finding the Fourth Proportional to 13,128.98, 19,694.68 and 5,229.59

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Solution

The fourth proportional to 13,128.98, 19,694.68 and 5,229.59 is: 7,844.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.98 : 19,694.68 = 5,229.59 : x
  2. Step 2: Convert to fraction form
    13,128.98/19,694.68 = 5,229.59/x
  3. Step 3: Cross multiply
    13,128.98x = 19,694.68 × 5,229.59
  4. Step 4: Simplify right side
    13,128.98x = 102,994,990.03
  5. Step 5: Solve for x
    x = 102,994,990.03/13,128.98
  6. Step 6: Final answer
    x = 7,844.86

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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.