Home / 12,102.77-18,151.89-3,782.99

Finding the Fourth Proportional to 12,102.77, 18,151.89 and 3,782.99

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Solution

The fourth proportional to 12,102.77, 18,151.89 and 3,782.99 is: 5,673.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,102.77 : 18,151.89 = 3,782.99 : x
  2. Step 2: Convert to fraction form
    12,102.77/18,151.89 = 3,782.99/x
  3. Step 3: Cross multiply
    12,102.77x = 18,151.89 × 3,782.99
  4. Step 4: Simplify right side
    12,102.77x = 68,668,418.35
  5. Step 5: Solve for x
    x = 68,668,418.35/12,102.77
  6. Step 6: Final answer
    x = 5,673.78

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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.