Home / 21,286.45-29,375.36-11,854.99

Finding the Fourth Proportional to 21,286.45, 29,375.36 and 11,854.99

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Solution

The fourth proportional to 21,286.45, 29,375.36 and 11,854.99 is: 16,359.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.45 : 29,375.36 = 11,854.99 : x
  2. Step 2: Convert to fraction form
    21,286.45/29,375.36 = 11,854.99/x
  3. Step 3: Cross multiply
    21,286.45x = 29,375.36 × 11,854.99
  4. Step 4: Simplify right side
    21,286.45x = 348,244,599.05
  5. Step 5: Solve for x
    x = 348,244,599.05/21,286.45
  6. Step 6: Final answer
    x = 16,359.92

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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.