Home / 19,799.52-27,290.80-15,813.60

Finding the Fourth Proportional to 19,799.52, 27,290.80 and 15,813.60

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Solution

The fourth proportional to 19,799.52, 27,290.80 and 15,813.60 is: 21,796.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,799.52 : 27,290.80 = 15,813.60 : x
  2. Step 2: Convert to fraction form
    19,799.52/27,290.80 = 15,813.60/x
  3. Step 3: Cross multiply
    19,799.52x = 27,290.80 × 15,813.60
  4. Step 4: Simplify right side
    19,799.52x = 431,565,794.88
  5. Step 5: Solve for x
    x = 431,565,794.88/19,799.52
  6. Step 6: Final answer
    x = 21,796.78

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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.