Home / 18,857.85-28,286.77-4,817.90

Finding the Fourth Proportional to 18,857.85, 28,286.77 and 4,817.90

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Solution

The fourth proportional to 18,857.85, 28,286.77 and 4,817.90 is: 7,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,857.85 : 28,286.77 = 4,817.90 : x
  2. Step 2: Convert to fraction form
    18,857.85/28,286.77 = 4,817.90/x
  3. Step 3: Cross multiply
    18,857.85x = 28,286.77 × 4,817.90
  4. Step 4: Simplify right side
    18,857.85x = 136,282,887.86
  5. Step 5: Solve for x
    x = 136,282,887.86/18,857.85
  6. Step 6: Final answer
    x = 7,226.85

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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.