Home / 18,880.08-28,290.60-11,940

Finding the Fourth Proportional to 18,880.08, 28,290.60 and 11,940

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Solution

The fourth proportional to 18,880.08, 28,290.60 and 11,940 is: 17,891.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.08 : 28,290.60 = 11,940 : x
  2. Step 2: Convert to fraction form
    18,880.08/28,290.60 = 11,940/x
  3. Step 3: Cross multiply
    18,880.08x = 28,290.60 × 11,940
  4. Step 4: Simplify right side
    18,880.08x = 337,789,764
  5. Step 5: Solve for x
    x = 337,789,764/18,880.08
  6. Step 6: Final answer
    x = 17,891.33

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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.