Home / 21,286.14-29,375.78-11,854.70

Finding the Fourth Proportional to 21,286.14, 29,375.78 and 11,854.70

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Solution

The fourth proportional to 21,286.14, 29,375.78 and 11,854.70 is: 16,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.14 : 29,375.78 = 11,854.70 : x
  2. Step 2: Convert to fraction form
    21,286.14/29,375.78 = 11,854.70/x
  3. Step 3: Cross multiply
    21,286.14x = 29,375.78 × 11,854.70
  4. Step 4: Simplify right side
    21,286.14x = 348,241,125.52
  5. Step 5: Solve for x
    x = 348,241,125.52/21,286.14
  6. Step 6: Final answer
    x = 16,360.00

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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.