Home / 12,168.87-18,256.40-3,403.83

Finding the Fourth Proportional to 12,168.87, 18,256.40 and 3,403.83

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Solution

The fourth proportional to 12,168.87, 18,256.40 and 3,403.83 is: 5,106.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.87 : 18,256.40 = 3,403.83 : x
  2. Step 2: Convert to fraction form
    12,168.87/18,256.40 = 3,403.83/x
  3. Step 3: Cross multiply
    12,168.87x = 18,256.40 × 3,403.83
  4. Step 4: Simplify right side
    12,168.87x = 62,141,664.99
  5. Step 5: Solve for x
    x = 62,141,664.99/12,168.87
  6. Step 6: Final answer
    x = 5,106.61

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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.