Home / 18,744.80-28,091.60-15,288.80

Finding the Fourth Proportional to 18,744.80, 28,091.60 and 15,288.80

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Solution

The fourth proportional to 18,744.80, 28,091.60 and 15,288.80 is: 22,912.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.80 : 28,091.60 = 15,288.80 : x
  2. Step 2: Convert to fraction form
    18,744.80/28,091.60 = 15,288.80/x
  3. Step 3: Cross multiply
    18,744.80x = 28,091.60 × 15,288.80
  4. Step 4: Simplify right side
    18,744.80x = 429,486,854.08
  5. Step 5: Solve for x
    x = 429,486,854.08/18,744.80
  6. Step 6: Final answer
    x = 22,912.32

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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.