Home / 18,003.85-27,002.66-8,140.84

Finding the Fourth Proportional to 18,003.85, 27,002.66 and 8,140.84

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Solution

The fourth proportional to 18,003.85, 27,002.66 and 8,140.84 is: 12,209.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,003.85 : 27,002.66 = 8,140.84 : x
  2. Step 2: Convert to fraction form
    18,003.85/27,002.66 = 8,140.84/x
  3. Step 3: Cross multiply
    18,003.85x = 27,002.66 × 8,140.84
  4. Step 4: Simplify right side
    18,003.85x = 219,824,226.42
  5. Step 5: Solve for x
    x = 219,824,226.42/18,003.85
  6. Step 6: Final answer
    x = 12,209.85

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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.