Home / 21,155.25-29,194.25-11,724.42

Finding the Fourth Proportional to 21,155.25, 29,194.25 and 11,724.42

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Solution

The fourth proportional to 21,155.25, 29,194.25 and 11,724.42 is: 16,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.25 : 29,194.25 = 11,724.42 : x
  2. Step 2: Convert to fraction form
    21,155.25/29,194.25 = 11,724.42/x
  3. Step 3: Cross multiply
    21,155.25x = 29,194.25 × 11,724.42
  4. Step 4: Simplify right side
    21,155.25x = 342,285,589.96
  5. Step 5: Solve for x
    x = 342,285,589.96/21,155.25
  6. Step 6: Final answer
    x = 16,179.70

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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.