Home / 13,855.10-20,792.66-5,422.84

Finding the Fourth Proportional to 13,855.10, 20,792.66 and 5,422.84

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Solution

The fourth proportional to 13,855.10, 20,792.66 and 5,422.84 is: 8,138.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.10 : 20,792.66 = 5,422.84 : x
  2. Step 2: Convert to fraction form
    13,855.10/20,792.66 = 5,422.84/x
  3. Step 3: Cross multiply
    13,855.10x = 20,792.66 × 5,422.84
  4. Step 4: Simplify right side
    13,855.10x = 112,755,268.35
  5. Step 5: Solve for x
    x = 112,755,268.35/13,855.10
  6. Step 6: Final answer
    x = 8,138.18

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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.