Home / 18,940.80-28,403.52-6,622.08

Finding the Fourth Proportional to 18,940.80, 28,403.52 and 6,622.08

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Solution

The fourth proportional to 18,940.80, 28,403.52 and 6,622.08 is: 9,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,940.80 : 28,403.52 = 6,622.08 : x
  2. Step 2: Convert to fraction form
    18,940.80/28,403.52 = 6,622.08/x
  3. Step 3: Cross multiply
    18,940.80x = 28,403.52 × 6,622.08
  4. Step 4: Simplify right side
    18,940.80x = 188,090,381.72
  5. Step 5: Solve for x
    x = 188,090,381.72/18,940.80
  6. Step 6: Final answer
    x = 9,930.43

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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.