Home / 12,086.87-18,130.41-3,766.55

Finding the Fourth Proportional to 12,086.87, 18,130.41 and 3,766.55

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Solution

The fourth proportional to 12,086.87, 18,130.41 and 3,766.55 is: 5,649.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.87 : 18,130.41 = 3,766.55 : x
  2. Step 2: Convert to fraction form
    12,086.87/18,130.41 = 3,766.55/x
  3. Step 3: Cross multiply
    12,086.87x = 18,130.41 × 3,766.55
  4. Step 4: Simplify right side
    12,086.87x = 68,289,005.13
  5. Step 5: Solve for x
    x = 68,289,005.13/12,086.87
  6. Step 6: Final answer
    x = 5,649.85

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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.