Home / 12,884.40-19,326.60-11,863.80

Finding the Fourth Proportional to 12,884.40, 19,326.60 and 11,863.80

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Solution

The fourth proportional to 12,884.40, 19,326.60 and 11,863.80 is: 17,795.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,884.40 : 19,326.60 = 11,863.80 : x
  2. Step 2: Convert to fraction form
    12,884.40/19,326.60 = 11,863.80/x
  3. Step 3: Cross multiply
    12,884.40x = 19,326.60 × 11,863.80
  4. Step 4: Simplify right side
    12,884.40x = 229,286,917.08
  5. Step 5: Solve for x
    x = 229,286,917.08/12,884.40
  6. Step 6: Final answer
    x = 17,795.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.