Home / 12,138.57-16,753.37-11,584.53

Finding the Fourth Proportional to 12,138.57, 16,753.37 and 11,584.53

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Solution

The fourth proportional to 12,138.57, 16,753.37 and 11,584.53 is: 15,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.57 : 16,753.37 = 11,584.53 : x
  2. Step 2: Convert to fraction form
    12,138.57/16,753.37 = 11,584.53/x
  3. Step 3: Cross multiply
    12,138.57x = 16,753.37 × 11,584.53
  4. Step 4: Simplify right side
    12,138.57x = 194,079,859.44
  5. Step 5: Solve for x
    x = 194,079,859.44/12,138.57
  6. Step 6: Final answer
    x = 15,988.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.