Home / 19,720.80-27,145.65-17,198.46

Finding the Fourth Proportional to 19,720.80, 27,145.65 and 17,198.46

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Solution

The fourth proportional to 19,720.80, 27,145.65 and 17,198.46 is: 23,673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.80 : 27,145.65 = 17,198.46 : x
  2. Step 2: Convert to fraction form
    19,720.80/27,145.65 = 17,198.46/x
  3. Step 3: Cross multiply
    19,720.80x = 27,145.65 × 17,198.46
  4. Step 4: Simplify right side
    19,720.80x = 466,863,375.70
  5. Step 5: Solve for x
    x = 466,863,375.70/19,720.80
  6. Step 6: Final answer
    x = 23,673.65

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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.