Home / 21,155.66-29,194.80-11,724.22

Finding the Fourth Proportional to 21,155.66, 29,194.80 and 11,724.22

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Solution

The fourth proportional to 21,155.66, 29,194.80 and 11,724.22 is: 16,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.66 : 29,194.80 = 11,724.22 : x
  2. Step 2: Convert to fraction form
    21,155.66/29,194.80 = 11,724.22/x
  3. Step 3: Cross multiply
    21,155.66x = 29,194.80 × 11,724.22
  4. Step 4: Simplify right side
    21,155.66x = 342,286,258.06
  5. Step 5: Solve for x
    x = 342,286,258.06/21,155.66
  6. Step 6: Final answer
    x = 16,179.42

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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.