Home / 18,990.35-28,460.74-13,743.03

Finding the Fourth Proportional to 18,990.35, 28,460.74 and 13,743.03

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Solution

The fourth proportional to 18,990.35, 28,460.74 and 13,743.03 is: 20,596.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.35 : 28,460.74 = 13,743.03 : x
  2. Step 2: Convert to fraction form
    18,990.35/28,460.74 = 13,743.03/x
  3. Step 3: Cross multiply
    18,990.35x = 28,460.74 × 13,743.03
  4. Step 4: Simplify right side
    18,990.35x = 391,136,803.64
  5. Step 5: Solve for x
    x = 391,136,803.64/18,990.35
  6. Step 6: Final answer
    x = 20,596.61

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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.