Home / 13,853.12-20,767.13-5,531.39

Finding the Fourth Proportional to 13,853.12, 20,767.13 and 5,531.39

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Solution

The fourth proportional to 13,853.12, 20,767.13 and 5,531.39 is: 8,292.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,853.12 : 20,767.13 = 5,531.39 : x
  2. Step 2: Convert to fraction form
    13,853.12/20,767.13 = 5,531.39/x
  3. Step 3: Cross multiply
    13,853.12x = 20,767.13 × 5,531.39
  4. Step 4: Simplify right side
    13,853.12x = 114,870,963.72
  5. Step 5: Solve for x
    x = 114,870,963.72/13,853.12
  6. Step 6: Final answer
    x = 8,292.06

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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.