Home / 12,089.92-18,131.04-3,880

Finding the Fourth Proportional to 12,089.92, 18,131.04 and 3,880

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Solution

The fourth proportional to 12,089.92, 18,131.04 and 3,880 is: 5,818.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.92 : 18,131.04 = 3,880 : x
  2. Step 2: Convert to fraction form
    12,089.92/18,131.04 = 3,880/x
  3. Step 3: Cross multiply
    12,089.92x = 18,131.04 × 3,880
  4. Step 4: Simplify right side
    12,089.92x = 70,348,435.20
  5. Step 5: Solve for x
    x = 70,348,435.20/12,089.92
  6. Step 6: Final answer
    x = 5,818.77

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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.