Home / 21,286.22-29,374.96-12,338.91

Finding the Fourth Proportional to 21,286.22, 29,374.96 and 12,338.91

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Solution

The fourth proportional to 21,286.22, 29,374.96 and 12,338.91 is: 17,027.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.22 : 29,374.96 = 12,338.91 : x
  2. Step 2: Convert to fraction form
    21,286.22/29,374.96 = 12,338.91/x
  3. Step 3: Cross multiply
    21,286.22x = 29,374.96 × 12,338.91
  4. Step 4: Simplify right side
    21,286.22x = 362,454,932.07
  5. Step 5: Solve for x
    x = 362,454,932.07/21,286.22
  6. Step 6: Final answer
    x = 17,027.68

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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.