Home / 28,297.22-39,039.26-21,575.90

Finding the Fourth Proportional to 28,297.22, 39,039.26 and 21,575.90

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Solution

The fourth proportional to 28,297.22, 39,039.26 and 21,575.90 is: 29,766.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,297.22 : 39,039.26 = 21,575.90 : x
  2. Step 2: Convert to fraction form
    28,297.22/39,039.26 = 21,575.90/x
  3. Step 3: Cross multiply
    28,297.22x = 39,039.26 × 21,575.90
  4. Step 4: Simplify right side
    28,297.22x = 842,307,169.83
  5. Step 5: Solve for x
    x = 842,307,169.83/28,297.22
  6. Step 6: Final answer
    x = 29,766.43

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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.