Home / 18,990.42-28,460.61-13,743.03

Finding the Fourth Proportional to 18,990.42, 28,460.61 and 13,743.03

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Solution

The fourth proportional to 18,990.42, 28,460.61 and 13,743.03 is: 20,596.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.42 : 28,460.61 = 13,743.03 : x
  2. Step 2: Convert to fraction form
    18,990.42/28,460.61 = 13,743.03/x
  3. Step 3: Cross multiply
    18,990.42x = 28,460.61 × 13,743.03
  4. Step 4: Simplify right side
    18,990.42x = 391,135,017.05
  5. Step 5: Solve for x
    x = 391,135,017.05/18,990.42
  6. Step 6: Final answer
    x = 20,596.44

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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.