Home / 21,155.44-29,195.16-11,724.40

Finding the Fourth Proportional to 21,155.44, 29,195.16 and 11,724.40

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Solution

The fourth proportional to 21,155.44, 29,195.16 and 11,724.40 is: 16,180.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.44 : 29,195.16 = 11,724.40 : x
  2. Step 2: Convert to fraction form
    21,155.44/29,195.16 = 11,724.40/x
  3. Step 3: Cross multiply
    21,155.44x = 29,195.16 × 11,724.40
  4. Step 4: Simplify right side
    21,155.44x = 342,295,733.90
  5. Step 5: Solve for x
    x = 342,295,733.90/21,155.44
  6. Step 6: Final answer
    x = 16,180.03

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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.