Home / 13,678.44-18,876.96-8,373

Finding the Fourth Proportional to 13,678.44, 18,876.96 and 8,373

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Solution

The fourth proportional to 13,678.44, 18,876.96 and 8,373 is: 11,555.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.44 : 18,876.96 = 8,373 : x
  2. Step 2: Convert to fraction form
    13,678.44/18,876.96 = 8,373/x
  3. Step 3: Cross multiply
    13,678.44x = 18,876.96 × 8,373
  4. Step 4: Simplify right side
    13,678.44x = 158,056,786.08
  5. Step 5: Solve for x
    x = 158,056,786.08/13,678.44
  6. Step 6: Final answer
    x = 11,555.18

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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.