Home / 36,091.88-54,138.38-12,718.60

Finding the Fourth Proportional to 36,091.88, 54,138.38 and 12,718.60

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Solution

The fourth proportional to 36,091.88, 54,138.38 and 12,718.60 is: 19,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,091.88 : 54,138.38 = 12,718.60 : x
  2. Step 2: Convert to fraction form
    36,091.88/54,138.38 = 12,718.60/x
  3. Step 3: Cross multiply
    36,091.88x = 54,138.38 × 12,718.60
  4. Step 4: Simplify right side
    36,091.88x = 688,564,399.87
  5. Step 5: Solve for x
    x = 688,564,399.87/36,091.88
  6. Step 6: Final answer
    x = 19,078.10

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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.