Home / 18,771.75-28,146.69-8,241.35

Finding the Fourth Proportional to 18,771.75, 28,146.69 and 8,241.35

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Solution

The fourth proportional to 18,771.75, 28,146.69 and 8,241.35 is: 12,357.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,771.75 : 28,146.69 = 8,241.35 : x
  2. Step 2: Convert to fraction form
    18,771.75/28,146.69 = 8,241.35/x
  3. Step 3: Cross multiply
    18,771.75x = 28,146.69 × 8,241.35
  4. Step 4: Simplify right side
    18,771.75x = 231,966,582.90
  5. Step 5: Solve for x
    x = 231,966,582.90/18,771.75
  6. Step 6: Final answer
    x = 12,357.22

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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.