Home / 12,192.30-18,288.36-3,872.96

Finding the Fourth Proportional to 12,192.30, 18,288.36 and 3,872.96

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Solution

The fourth proportional to 12,192.30, 18,288.36 and 3,872.96 is: 5,809.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.30 : 18,288.36 = 3,872.96 : x
  2. Step 2: Convert to fraction form
    12,192.30/18,288.36 = 3,872.96/x
  3. Step 3: Cross multiply
    12,192.30x = 18,288.36 × 3,872.96
  4. Step 4: Simplify right side
    12,192.30x = 70,830,155.86
  5. Step 5: Solve for x
    x = 70,830,155.86/12,192.30
  6. Step 6: Final answer
    x = 5,809.42

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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.