Home / 12,192.09-18,288.77-3,872.76

Finding the Fourth Proportional to 12,192.09, 18,288.77 and 3,872.76

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Solution

The fourth proportional to 12,192.09, 18,288.77 and 3,872.76 is: 5,809.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,192.09 : 18,288.77 = 3,872.76 : x
  2. Step 2: Convert to fraction form
    12,192.09/18,288.77 = 3,872.76/x
  3. Step 3: Cross multiply
    12,192.09x = 18,288.77 × 3,872.76
  4. Step 4: Simplify right side
    12,192.09x = 70,828,016.91
  5. Step 5: Solve for x
    x = 70,828,016.91/12,192.09
  6. Step 6: Final answer
    x = 5,809.34

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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.