Home / 19,932.80-27,506.49-11,979.40

Finding the Fourth Proportional to 19,932.80, 27,506.49 and 11,979.40

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Solution

The fourth proportional to 19,932.80, 27,506.49 and 11,979.40 is: 16,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,932.80 : 27,506.49 = 11,979.40 : x
  2. Step 2: Convert to fraction form
    19,932.80/27,506.49 = 11,979.40/x
  3. Step 3: Cross multiply
    19,932.80x = 27,506.49 × 11,979.40
  4. Step 4: Simplify right side
    19,932.80x = 329,511,246.31
  5. Step 5: Solve for x
    x = 329,511,246.31/19,932.80
  6. Step 6: Final answer
    x = 16,531.11

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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.