Home / 12,219.99-18,332.97-3,900.02

Finding the Fourth Proportional to 12,219.99, 18,332.97 and 3,900.02

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Solution

The fourth proportional to 12,219.99, 18,332.97 and 3,900.02 is: 5,850.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.99 : 18,332.97 = 3,900.02 : x
  2. Step 2: Convert to fraction form
    12,219.99/18,332.97 = 3,900.02/x
  3. Step 3: Cross multiply
    12,219.99x = 18,332.97 × 3,900.02
  4. Step 4: Simplify right side
    12,219.99x = 71,498,857.99
  5. Step 5: Solve for x
    x = 71,498,857.99/12,219.99
  6. Step 6: Final answer
    x = 5,850.98

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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.