Home / 15,724.06-21,699.20-9,436.44

Finding the Fourth Proportional to 15,724.06, 21,699.20 and 9,436.44

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Solution

The fourth proportional to 15,724.06, 21,699.20 and 9,436.44 is: 13,022.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.06 : 21,699.20 = 9,436.44 : x
  2. Step 2: Convert to fraction form
    15,724.06/21,699.20 = 9,436.44/x
  3. Step 3: Cross multiply
    15,724.06x = 21,699.20 × 9,436.44
  4. Step 4: Simplify right side
    15,724.06x = 204,763,198.85
  5. Step 5: Solve for x
    x = 204,763,198.85/15,724.06
  6. Step 6: Final answer
    x = 13,022.29

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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.