Home / 12,446.80-18,665.88-3,679.36

Finding the Fourth Proportional to 12,446.80, 18,665.88 and 3,679.36

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Solution

The fourth proportional to 12,446.80, 18,665.88 and 3,679.36 is: 5,517.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,446.80 : 18,665.88 = 3,679.36 : x
  2. Step 2: Convert to fraction form
    12,446.80/18,665.88 = 3,679.36/x
  3. Step 3: Cross multiply
    12,446.80x = 18,665.88 × 3,679.36
  4. Step 4: Simplify right side
    12,446.80x = 68,678,492.24
  5. Step 5: Solve for x
    x = 68,678,492.24/12,446.80
  6. Step 6: Final answer
    x = 5,517.76

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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.