Home / 13,195.98-19,821.53-11,221.31

Finding the Fourth Proportional to 13,195.98, 19,821.53 and 11,221.31

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Solution

The fourth proportional to 13,195.98, 19,821.53 and 11,221.31 is: 16,855.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.98 : 19,821.53 = 11,221.31 : x
  2. Step 2: Convert to fraction form
    13,195.98/19,821.53 = 11,221.31/x
  3. Step 3: Cross multiply
    13,195.98x = 19,821.53 × 11,221.31
  4. Step 4: Simplify right side
    13,195.98x = 222,423,377.59
  5. Step 5: Solve for x
    x = 222,423,377.59/13,195.98
  6. Step 6: Final answer
    x = 16,855.39

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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.