Home / 28,772.20-43,175.04-12,131.20

Finding the Fourth Proportional to 28,772.20, 43,175.04 and 12,131.20

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Solution

The fourth proportional to 28,772.20, 43,175.04 and 12,131.20 is: 18,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,772.20 : 43,175.04 = 12,131.20 : x
  2. Step 2: Convert to fraction form
    28,772.20/43,175.04 = 12,131.20/x
  3. Step 3: Cross multiply
    28,772.20x = 43,175.04 × 12,131.20
  4. Step 4: Simplify right side
    28,772.20x = 523,765,045.25
  5. Step 5: Solve for x
    x = 523,765,045.25/28,772.20
  6. Step 6: Final answer
    x = 18,203.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.