Home / 18,791.02-28,187.21-6,311.45

Finding the Fourth Proportional to 18,791.02, 28,187.21 and 6,311.45

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Solution

The fourth proportional to 18,791.02, 28,187.21 and 6,311.45 is: 9,467.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.02 : 28,187.21 = 6,311.45 : x
  2. Step 2: Convert to fraction form
    18,791.02/28,187.21 = 6,311.45/x
  3. Step 3: Cross multiply
    18,791.02x = 28,187.21 × 6,311.45
  4. Step 4: Simplify right side
    18,791.02x = 177,902,252.80
  5. Step 5: Solve for x
    x = 177,902,252.80/18,791.02
  6. Step 6: Final answer
    x = 9,467.41

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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.