Home / 18,791.40-28,185.66-4,940.04

Finding the Fourth Proportional to 18,791.40, 28,185.66 and 4,940.04

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Solution

The fourth proportional to 18,791.40, 28,185.66 and 4,940.04 is: 7,409.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.40 : 28,185.66 = 4,940.04 : x
  2. Step 2: Convert to fraction form
    18,791.40/28,185.66 = 4,940.04/x
  3. Step 3: Cross multiply
    18,791.40x = 28,185.66 × 4,940.04
  4. Step 4: Simplify right side
    18,791.40x = 139,238,287.83
  5. Step 5: Solve for x
    x = 139,238,287.83/18,791.40
  6. Step 6: Final answer
    x = 7,409.68

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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.