Home / 21,180.80-29,163.04-17,987.44

Finding the Fourth Proportional to 21,180.80, 29,163.04 and 17,987.44

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Solution

The fourth proportional to 21,180.80, 29,163.04 and 17,987.44 is: 24,766.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.80 : 29,163.04 = 17,987.44 : x
  2. Step 2: Convert to fraction form
    21,180.80/29,163.04 = 17,987.44/x
  3. Step 3: Cross multiply
    21,180.80x = 29,163.04 × 17,987.44
  4. Step 4: Simplify right side
    21,180.80x = 524,568,432.22
  5. Step 5: Solve for x
    x = 524,568,432.22/21,180.80
  6. Step 6: Final answer
    x = 24,766.22

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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.